Jul 24

Compensating for “Lost Sleep”

Why Catching up on Sleep doesn’t Work

Catching up on sleep is a preferred strategy among many insomniacs. In fact, trying to catch up on “lost sleep” is counterproductive, because it throws off your natural body rhythm. It creates even more of the very problems insomniacs are trying to solve. As you recall, your circadian rhythm governs your sleep. By getting up later, you delay your exposure to sunlight and postpone the physically active start of your day. By delaying these factors, you also delay the corresponding rise in body temperature. That means that you delay the needed drop in body temperature (that is conducive to sleep) by that same length of time at night. If you try to get to sleep at your usual bedtime, your body temperature may still be too elevated, and you will find it difficult or impossible to fall asleep.

This is how by sleeping in on Sundays, for instance, you are actually creating a kind of artificial jet lag. (If you fly three hours east, morning arrives three hours early. It’s three hours later on the East Coast of the US than on the West Coast.) You haven’t been on a plane, but the effects are exactly the same. You are creating a shift in your natural rhythm. Trying to catch up on sleep only disrupts your natural rhythm of your body. In effect, you will prolong this and create fertile ground for insomnia at night.

You can always catch up on quantity of sleep simply by sleeping longer hours, but what you can’t catch up on is quality sleep, which as we’ve learned is what really matters! As you remember, you get most of your quality sleep (deep sleep) during the first part of the night, during the first cycles of sleep. So if you extend your sleep time to ten hours or more you will obviously be increasing your amount of sleep (quantity), but the benefits in terms of increased energy will be limited since the extra hours of sleep contain brief, if any periods of deep sleep! You see now that trying to catch up on lost sleep is another strategy that is destined for failure!

The good news is that this is not really something that you should worry about since our sleep system has a self-restorative function; a “drive” that will compensate for the lack of deep sleep one night by increasing the percentage of deep sleep you receive the next night!

Jul 17

Sunlight, Exercise, and Insomnia 

Now that we have learned about sunlight  and exercise, let’s look at the exact implications of this newly found knowledge.

Both exercise and sunlight have a direct impact on your sleep system and your body temperature rhythm. If you don’t get sufficient exercise and sunlight, you increase daytime drowsiness because you inhibit the daily rise and fall of body temperature.

When feeling drowsy and lacking energy during the day most people quickly jump to the conclusion that it is because they didn’t get enough sleep. For this very reason, they rest more and decrease their activity level based on the theory that “I’m feeling tired, so obviously I didn’t get enough sleep last night and I should probably get some rest.”

This is a faulty theory and exactly the sort of behavior that will only create additional sleep problems for you! It is counterproductive because by being inactive and staying indoors you are flattening your body temperature curve so you will feel more tired when in fact you are supposed to be feeling awake. You can easily get caught in a vicious cycle: the more fatigue you encounter, the more you are likely to stay inactive (and consequently the less restorative your sleep will be at night). You are also more likely to stay indoors and thereby limit your exposure to sunlight.

Also, keep in mind the lesson we learned earlier: you CAN perform on less sleep than you think! In addition, for a brief period you can perform with less sleep than you need, so discard that particular worry for now. Although you may get less sleep than you need on occasion, the proper way to combat this reality is by being physically active and staying outdoors in order to receive exposure to natural light! Go get up, get out and get active!

When you’re feeling tired, fatigued and lacking in energy you are likely to try to compensate for this by getting to bed early. Nice try! Unfortunately, this only weakens your sleep system by decreasing your prior wakefulness, which decreases your “sleep drive.”

You will also tend to decrease activity levels and your exposure to natural light by going to bed early. Remember the goal is just the opposite: you want to INCREASE prior wakefulness to create a deeper, restorative sleep. By doing the opposite you will only encourage lighter and less rejuvenating sleep which leaves you feeling drowsy and without energy during the day. This, in turn leaves you with a tendency to be inactive and stay indoors, and the vicious cycle continues!

Remember! Even if you DID in fact get too little sleep, the best way to counter a sense of tiredness, fatigue and lack of energy is by getting sunlight and exercise and NOT by staying inactive and resting. This will only trap you further in this cycle!

Bottom line: No matter how little you sleep or how little you think you have slept or how drowsy you feel - get out and get active! This is the best way to turn this vicious cycle around: incorporate an element of daily outdoor activity into your life!

Jul 14

 

1. Soft drinks mess with your digestive system.  If you eat healthy foods, soft drinks obstruct your body in the process of taking in the nutrients. So not only are soft drinks unhealthy, they lessen the benefits of the healthy stuff too.

2. Soft drinks can leach off the aluminum inside the can when stored for longer periods.  Coincidentally, autopsies of Alzheimer patients reveal heightened aluminum levels in the brain.  Metal in the brain – that doesn’t necessarily sound like a good thing.

3. Tooth Decay such as total loss of enamel on the teeth (that used to occur only among the elderly) has been reported by dentists in teenage boys and girls who are frequent consumers of soft drinks. Maybe the kids Christmas presents this year should be a teeth whitening series?

4. Soft drinks make you thirstier because they contain sodium (a form of salt). If you get thirsty, have another can!

5. Soft Drinks contain a wide variety of chemical acids like acetic, fumaric, gluconic, and phosphoric acids. No wonder sodas are very effective when it comes to removing rust from a car bumper or cleaning car engines. Maybe they should launch a new product: Coca-Cleaner - they could certainly use some of the same ingredients, if not just the same recipe.

6. Soft drinks lead to weakened bones, particularly in growing teens due to a lack of calcium rich fluid consumption. Soft drinks have also been linked with bone fractures in teenage girls.

7. Soft drinks weaken your immune system. Drinking soft drinks instead of water can weaken your body at the cellular level causing a weakened immune system.

8. Diet soft drinks contain Aspartame, an additive that has been linked with depression, insomnia, neurological disease and a many other diseases. Aspartame is a strong neurotoxin and endocrine disrupter.

9. Soft drinks are hundreds of thousands times more acidic than the natural environment in your body. Diseases thrive in an acidic environment.

10. The phosphates in soft drinks leach vital minerals from your body. A severe lack of minerals such as magnesium and calcium can cause heart disease, osteoporosis and many other diseases.  

11. Excessive sugar in soft drinks causes your pancreas to produce an abundance of insulin, which leads to a “sugar crash”. Chronic elevation and depletion of sugar and insulin can lead to diabetes and other imbalance related diseases. This particularly affects growing children and it can set the stage for life-long health problems.

12. Soft drink companies specifically aim to get more young customers - so much for corporate responsibility.

13. Soft drinks are highly addictive - trying to quit often cause withdrawal symptoms such as headaches, fatigue, anxiety, and nausea. Does that sound like someone trying to quite drugs?

14. Soft drinks commonly cause gastrointestinal distress including heightened acid levels in the stomach and moderate to severe gastric inflammation and possible stomach lining erosion

Jul 13

The Passive Lifestyle – The Real Benefits To Exercise

We live in a day and age where physical activity is becoming less and less required in order to lead a perfectly functional life. Rather than spending hours outside chopping wood, we simply turn the knob and turn up the heat. At work, we send an email to our co-workers rather than getting up and talking to them in person. Tasks that were once done by hand are increasingly automated. We increasingly automate our homes. Our places of work increase efficiency by using robots, computers, and other labor saving equipment. In general, lifestyles with a pronounced tendency toward physical inactivity are becoming the dominant lifestyle.  

The consequences of a life of physical inactivity are severe. You’ve heard a million times that exercise is healthy and that the human body was designed to be physically active and not to be passive, doing practically nothing! We’ve all heard it, yet many people fail to incorporate regular exercise into their daily routines. We hear everywhere that exercise is healthy, but often we do near hear about the exact consequences of inactivity. I often think that’s a major reason that we lack the motivation to start living an active life. We know that exercise is good for our health, but we aren’t always equally aware of the very dramatic consequences of a life of inactivity.  

Let the following serve as a reminder of just how important exercise is for your health and well-being both mentally and physically. The most obvious benefit of regular exercise is reaching your ideal body weight. When you lose excess weight, your body image improves and you feel better about yourself. This is both a mental and physical benefit in one! However, there are so many more benefits of exercise, for example:  

• Exercise helps decrease anxiety, stress, anger, blood pressure, cholesterol, and depression.  

• Exercise eases muscular tension.  

• Exercise sharpens the brain by increasing the amount of oxygen available.  

• Exercise strengthens the heart and lungs and vitalizes the nervous system.  

• Exercise increases endorphin production. Endorphins increase well-being and pain resistance.  

• Exercise increase energy levels, mood, and self-esteem.

Exercise reduces the risk of a wide variety of diseases including diabetes, osteoporosis, coronary heart disease, hypertension, obesity, back problems and colon cancer.  

An important thing to note: Exercise not only helps you attain better health, it is also an outlet for mental and emotional distress such as anxiety and anger. It is also an effective tool in warding off depression. Anxiety, anger, and depression all have a very negative influence on sleep! We’ll learn more about this later on.  

Did you know that exercise has a more tranquilizing effect than many medications against anxiety?  

I could go on about the general benefits of exercise, but that is not the focus of this book. I hope that this has been a wake up call for those of you who lead an inactive lifestyle. Let’s look at exactly how sleep and exercise relate to each other. There are several reasons why physical inactivity can lead to increased insomnia.  

Recall how your daily rise and fall in body temperature—your circadian rhythm—dictates your ability to fall asleep. The more physically inactive you are during the day, the more you are inhibiting your daily rise and fall of body temperature—and we have already learned how inhibiting your natural temperature fluctuations can cause sleep problems.  

Exercise produces a quick rise in your body temperature followed two hours later by a drop in body temperature, which will last from two to four hours. This drop in body temperature will make it easier to fall asleep and stay asleep.  

Exercise is also conducive to sleep because it puts strain on the body. When you physically engage your body, your brain will compensate for this by increasing the length of the deep sleep stage. This means that exercise will not only help you fall asleep and increase sleep efficiency, it will also help you raise the quality of your sleep. Furthermore, because you will be in a prolonged period of deep sleep, it decreases the likelihood of you waking up!

 

Jul 13

Jul 11

Disrupting Your Natural Sleep Rhythm

We already looked at the mechanism that regulates your sleep and energy, your biological clock of sleep. This internal sleep clock is a very delicate physiological system—it is very sensitive and its natural rhythm is easily thrown out of balance by a number of internal and external factors. In other words, insomnia or impaired daytime functioning is often a symptom of the way you live your life and the way you think. It is critically important that you consciously identify and understand the issues that are messing up your natural sleep rhythm. In this part, we will be looking at these specific issues and providing you with a deeper understanding.

The Circadian Daredevil

 Like many of you, Frenchman Michel Siffre also rejoiced in a New Year’s celebration in 2000. Yet unlike most of you, Michel’s celebration took place three days late! Michel Siffre, a then 61-year-old cave explorer, descended 2,970 feet into a cave located in southern

France as part of an experiment. Michel lived in this deep cave for two months with no contact with the outside world and without any kind of instrument to measure the time of day. He found it extremely difficult to keep track of time while living without cues of any kind to help him tell if it was day or night. Scientists wanted to study Michel’s sleep habits while he was in the cave. For that purpose, Michel wore electrodes on his body that allowed scientists at the cave opening to monitor his sleep. They observed that Siffre’s sleep/wake cycles varied considerably. His “day” or prior wakefulness (the time between major sleep periods) varied between 18 and 52 hours (his average “day” equaled 27.5 hours)! What happened to Siffre? Being confined in an environment without exposure to natural light, his internal body clock was thrown out of balance. As we have already briefly touched upon, sunlight is the cue for your body clock to reset and adjust itself to the environment. During his stay in the cave, Siffre’s body clock never received this cue and naturally, his body didn’t know when it was supposed to sleep and when it was supposed to be awake. The result: his natural sleep rhythm was thrown out of whack.

Sunlight

You may be asking yourself, “How is this relevant?” I’m not living in a cave or planning a trip to the moon anytime soon. Okay, you don’t need to convince me of that, but the fact is that ordinary home lighting is a very poor substitute for natural sunlight. As far as your body is concerned staying in a office or in your home most of the day with no or very little exposure to natural light is the equivalent of living in a cave—and as you have probably figured, human beings weren’t designed to spend most of their time in a cave.

If you think that there is plenty of light in your home or at work, you are not quite right. You see, an ordinary light bulb emits around 200-500 luxes (a measure of illumination) of light. This is an inadequate amount of light especially when you consider that the light at sunrise produces around 10,000 luxes and at noon around 100,000 luxes. This should make it painfully clear that most indoor lighting is insufficient for our purposes. This is the reason why sunlight is so important. When bright sunlight enters your eyes it causes melatonin levels to decrease which stimulates wakefulness. The more luxes, the more melatonin production is inhibited. Conversely, when you are primarily exposed to indoor lighting during the day, melatonin levels increase since this type of light contains too few luxes and thereby your sleep system doesn’t understand it is getting light (isn’t adequately fueled). It thinks you’re in near-darkness and you will start to experience feelings of fatigue and tiredness. We can tell from this that exposure to bright light is required in order to make your body tell the difference between day and night. It is also crucial because if you stay out of natural light the entire day, you are flattening your circadian rhythm curve. This means that your body temperature doesn’t rise very much, which means that you are not giving your body a cue to start its natural rhythm. When your body temperature doesn’t rise very much, logic tells us that the ensuing drop in temperature will only be very small as well. This means that you are making it harder for your body to decipher the clues it needs to tell whether it is time to be awake or sleep. An irregular and limited exposure to sunlight “flattens” your body temperature curve. If you are not exposed to natural light until later in the day, you are delaying your body temperature curve. We can probably agree that moving to a cave is just a bit out of the ordinary, some might even call it crazy, but it isn’t one bit crazier than depriving yourself of natural light! That’s exactly what you’re doing if you’re not getting sunlight in the morning and throughout the day. It is often when people fail to expose themselves to sunlight as soon as they get out of bed and during the day that their natural sleep system becomes disrupted. In that case, you are giving your body a good reason to think that it’s time to sleep. The inevitable result is that you will be feeling drowsy and likely to fall asleep during the day. Further, the onset of night is not as a strong cue for your body that it is time for rest, because your body doesn’t have a clear distinction of day and night. The result is that your body and its natural rhythms become confused.

The Bottom Line on Circadian Rhythms

You need sunlight – by exposing yourself to sunlight you are communicating with your body in terms that your body can understand. Exposure to sunlight in the morning tells your body that another day has started and that the time for sleeping has ended. You also need darkness. When you are in a completely darkened room, you are telling your body that it is time to sleep.

Failure to expose ourselves to daylight is only one of the many ways that we are interfering with the inner sleep clock. We also engage in a variety of additional activities that only further disrupt the inner sleep system. It’s important to remember that it’s exposure to natural full-spectrum light (sunlight) that affects melatonin levels and body temperature—the sleep clock’s thermostat.


Jul 10

24 Ways to Waste Less Time in Bed 

Are you really an efficient sleeper or are you basically shaving hours off your life every day?  

Most people - probably including you - waste hours in bed for absolutely no good reason. The purpose of this article is to help you, not only to fall asleep faster, but also to optimize your sleep system – the idea is of course that you will ultimately waste less time in bed because you will require less sleep and fall asleep faster. 

The article is a work in progress. New tips will be added regularly, including in-depth explanations of each tip.  

1. Slow Bed Movements. Instead of tossing and turning in bed, move around sloooowly if you absolutely have to move around. Frustration feeds on fast movements. Gentle, slow movements will make you yawn and feel more tired. Try it!   

2. Eliminate Negative Thinking. Negative thinking in general (but in particular negative thinking about not being able to fall asleep) creates frustration that causes higher brain waves. When your brain waves are high you are more alert making it practically impossible to fall asleep. Replace negative thoughts with positive thoughts and images. Some people find it helpful to say, “Cancel, cancel,” every time they catch themselves in negative self-talk before substituting a positive statement.  

3. Limit time spent in bed. Regardless of how long you slept, don’t spend more than 8 hours in bed. Get out of that bed! Unless of course you and your better half have morning activities of some sort planned (which I do not want to hear about in any way, shape, or form. Please!). 

4. Reduce intake of stimulants. Avoid stimulants such as caffeine and nicotine at least 4-6 hours prior to bedtime. Nicotine and caffeine both speed up brain waves thereby promoting poor sleep. They can also cause you to have trouble falling asleep and can also cause more awakenings during the night. A little known fact is that smokers often experience nicotine withdrawal symptoms during sleep, which means your body will have more difficulty entering the deep sleep stage.’ 

5. Don’t use alcohol to fall asleep. People who are experiencing difficulties falling asleep often try to solve the problem with alcohol - the so-called nightcap. Although alcohol initially has a stimulating effect, that effect is followed by a decrease in the time needed to fall asleep. However, while alcohol does help people fall into light sleep, it also robs them of the deeper, restorative stages that are responsible for restoring your physical energy, which is likely to have a negative impact on your daily energy levels.


6. Learn to Relax or Meditate. Practice breathing exercises such as abdominal breathing – or consider learning some basic relaxation techniques. Google it! No, you do not also have to become an active yoga enthusiast just because you meditate, and you will be no less of a man (or woman) for doing so. Listen to meditative slow music. Buy a meditation CD! 

7. Relax your facial muscles. Most people who try to relax are mostly concerned about relaxing the body. Full relaxation goes for your face too.  

8. Stop looking at your alarm clock. If you can’t stop looking at your alarm clock when trying to fall asleep, move it out sight or turn it around. You don’t want to be reminded that you can’t fall asleep - it will only reinforce the inability to fall asleep.  

9. Adhere to a designated get-out-of-bed time every morning. It doesn’t matter if you haven’t slept well or slept very much. Yes… get out of bed! I thought I told you that already? 

10. Don’t concentrate on falling asleep. You should never actively pursue sleep. If you stress because you feel that you must be asleep by a certain time or simply put too much effort into focusing on falling asleep, you will decrease the likelihood of your falling asleep.  

11. Expose yourself to natural light (works best during daytime). As people we are designed to bask in natural light, not to be confined in artificially illuminated cubicles all day long! Get out and enjoy the splendor of the real world as often as you can. Take your lunch outside; eat breakfast on your porch or near a window. Move your desk near a window. Ordinary indoor lighting produces so little natural light that your body practically believes you’re in total darkness. 

12. Make sure your bedroom is dark. I’m talking about when it is time to sleep. What you and/or partner(s) do before that time is none of my business! Geeez, how many times do I have to repeat myself here! The same way that bright daylight signals to your body that it is time to wake up, darkness has the opposite effect. Complete darkness aids the body in the production of melatonin that is required in order to sleep. 

13. Take a vow of abstinence. 

14. Let’s get physical. No, I’m not necessarily talking about that. Jogging works too. Exercise is conducive to sleep because it puts strain on the body. When you physically engage your body, your brain will compensate for this by increasing the length of the deep sleep stage. The best time to exercise is late afternoon or early evening. This is so the ensuing drop in body temperature will coincide with your designated bedtime.  

15. Ok, ok. Scratch number 13. Jogging isn’t that much fun. 

16. Don’t eat heavy meals in the evening. Your digestive system slows down during the night, so your system will use a lot of energy digesting late meals—energy that should have been used to rejuvenate your body! So, avoid heavy eating before bedtime. 

17. Take a steaming hot bath for around 20-30 minutes. Taking a hot bath will provide a quick rise in body temperature followed by a drop. You should take a bath around two hours before bedtime so the drop in body temperature will coincide with your designated bedtime. Taking a bath more than two hours before bedtime may only make it more difficult to fall asleep since body temperature may still be too high. 

18. Get off soft drinks. Most soft drinks contain caffeine—the bottom line is that you should moderate soft drink consumption, or stop it completely. 

19. Eat foods that are conducive to sleep. Eat chlorophyll-rich foods, such as leafy, green vegetables, lightly steamed or boiled. Fresh is always better than frozen or canned. Local is better than imported. Micro algae, such as chlorella and spirulina, are considered super foods, because they provide so many vitamins and minerals. You can purchase these and oyster shell as nutritional supplements in a health foods store. Carbohydrates boost serotonin, which promotes better sleep. Whole grains such as whole wheat, brown rice, and oats have a calming and soothing effect on the nervous system and the mind. Mushrooms support the immune system. Fruit, especially mulberries and lemons, calm the mind. Seeds: jujube seeds calm the spirit and support the heart. Chia seeds also have a sedative effect. Use dill, basil and other herbs, particularly organic herbs, to spruce up your dishes. 

20. Adjust bedroom temperature. Since we already know that a drop in body temperature is important in regards to falling asleep, it is obvious that it will be harder for your body temperature to drop if your bedroom is too warm. Make sure that your bedroom is relatively cool. Of course, it should not be so cold that you are freezing, since that will make you unable to relax and fall asleep. A few degrees below your daytime environment will set the stage for quality sleep.  

21. Block out the noise. To block out unwanted and disturbing noises some people find a constant “white noise” very soothing and an effective remedy to achieve a serene, calm mindset. White noise masks other noises that may be keeping you awake. 

22. Develop good pre-sleep routines. An hour or so prior to sleep, it is important that you start to wind down and allow your mind and body to become susceptible to slipping into sleep. During this hour before sleep, you should avoid any stimulating activities such as discussing finances with your spouse or watching an action packed programs on TV. This, of course, includes the news! 

23. Laugh more. Laugh and have fun some time before bedtime. Laughter releases endorphins in your body and reduces stress. It’s not enough to just go ha-ha. It has to be genuine laughter. You can make a frequently updated play list on Youtube.com to create your own little laugh-on-demand cinema. 

24. Don’t go to bed unless you feel tired. You should only try to sleep when you are sleepy. Let your body tell you when it is time for bed. Frustration is most often the effect of a failed attempt to go to sleep. With increased frustration, you are left in a state of arousal that further inhibits sleep. In addition, as you continue to lie awake, you reinforce the association between your bed and wakefulness.  

25. Insert your tip here. If you have a tip that has worked for you - feel free to leave a comment below! If it is any good I will add it to the list :)
Sweet Dreams… but not for too long.
J

Martin

Jul 09

Prior Wakefulness

Prior wakefulness is a very basic concept. It is simply the number of hours that have passed from the moment you awaken in the morning until you turn out the lights at night. By increasing prior wakefulness, you are stimulating your “sleep drive.” Naturally, the more hours you are awake the more you increase the pressure for sleep. You’re probably thinking, “of course I will be more tired the longer I’m awake” but there’s more to it than just that. Research has shown that by increasing prior wakefulness your sleep will be more restful. In other words, by increasing prior wakefulness as much as possible (without missing core sleep), your sleep will be more restorative because you will more easily enter the deep sleep stage(s). It is a scientifically proven fact that the more prior wakefulness, the more quality sleep!

Prior wakefulness is also important because if your prior wakefulness is low (you haven’t been awake long enough) then it follows that you’ve had less time in which to be active as well as less time to be exposed to natural light. This weakens your sleep system by inhibiting the rise and fall in your body temperature, which you need to induce deep, quality sleep.

Jul 09

The Internal Sleep System

Body Temperature and Circadian Rhythm

 Your internal biological clock, often referred to as the sleep clock or circadian clock, regulates your sleep and your daytime energy levels. This inner clock is sensitive to many factors, as you will learn later on. Your biological clock is very different from a normal clock. The biological clock is a physiological system that allows you to live in harmony with the rhythms of nature, such as the cycles of day and night and the changing of seasons. The most important function of our biological clock is that it regulates our sleep/wake cycle. This clock is located in a very small area of the brain called the within the hypothalamus. This part of the brain is often referred to as the body’s master gland because it regulates such vital functions as heart rate, breathing, blood pressure, hormone production, and body temperature! If anything, this should underline the importance of body temperature. Now that you have a basic understanding of what the sleep clock is, let us look at the specific components or variables that combine to make up this sleep clock.

The Importance of Body Temperature

A vital component of your body clock is body temperature. Our body clock regulates body temperature, and is very important with regard to sleep. We refer to the body temperature rhythm as circadian rhythm (from Latin meaning “about a day”). Let further explain circadian rhythm and the ebb and flow of body temperature during a day: In the wee hours of the early morning, your body temperature is at its lowest point and then it begins to rise before sunrise. Your temperature continues to increase throughout the day until mid afternoon when it drops a bit, and then starts rising again reaching it’s peak at about 6 PM. During the next few hours, your body temperature drops until you fall asleep, when it starts to decline rapidly until it reaches its daily low point at around 4 AM.

The variation between minimum and maximum body temperature is about 1½ degrees F. in a healthy young adult. These variations in temperature are closely linked to your daily activities, alertness, and sleepiness. As mentioned earlier, body temperature and sleep are closely related. During late morning and early evening, you are at your most active and alert when your body temperature is highest. As body temperature declines at night, you grow sleepier and less active. When your body temperature increases, your brain wave activity speeds up as well. Conversely, when body temperature declines, brain waves slow down. In other words, in order for you to start waking in the morning and for you to feel energized and alert, your body temperature must rise. Still, many people lead a lifestyle where this natural body temperature curve is not really a curve at all, but very flat! Meaning there is not a very big variation between high and low.

 If there isn’t a significant rise in body temperature in the morning, your level of alertness won’t increase significantly either, or at least not rapidly. Conversely, if there is not a significant drop in body temperature at night, sleep will not come easily. This rise and fall in body temperature is what sends a signal to your brain—when to feel tired and when to feel awake. A good body temperature curve isn’t just something that comes along automatically.

Your body needs a cue to start its natural rhythm and “align” itself with the cycle of light/dark for your body temperature to rise. Similarly, in order for you to fall asleep at night, a drop in body temperature is required. If this drop does not occur, you will experience severe difficulties falling asleep! The prerequisite for this drop in body temperature to occur is that your circadian rhythm started on cue upon awakening in the morning!

What has happened to so many people in today’s fast-paced world is that they inadvertently do any number of things that inhibit this circadian rhythm and mess with the natural body temperature curve. Two of the most important factors that interfere with body temperature rhythm are your daily level of natural sunlight exposure and your daily level of activity. We’ll explore those factors in detail later on. Remember that if your cycle does not start in the morning but rather later in the day, you delay you natural rhythm, which in turn delays the drop in body temperature that is required for you to fall asleep.

Melatonin

You may have become acquainted with melatonin as a popular supplement, but melatonin is more importantly a natural hormone that is secreted by the pineal gland, a small gland nestled deep within the human brain. Scientists did not become aware of melatonin until 1958! Melatonin is one of the key components of your inner sleep system. When melatonin levels are high, you feel drowsy and tired; and conversely, when melatonin levels are low, you feel vitalized and full of energy. Sunlight and darkness regulate melatonin levels. When sunlight enters your eyes, melatonin levels decrease. This also causes a rise in body temperature. In other words, you start to feel awake.

Jul 08

Improving the Quality of Sleep

Okay, so we’ve seen that your sleep progresses in cycles and each cycle consists of different stages of sleep. What is the significance of this, why is this so important? Research has shown that it’s the lack of deep sleep that negatively impacts daytime functioning. When we are deprived of deep sleep, we are most likely to feel drowsy and have trouble staying focused during the day. Other uncomfortable effects of deep sleep deprivation are nausea, headaches, and aching muscles. In other words, the more deep sleep we obtain the better our performance and energy levels the next day. Therefore, deep sleep restores your physical energy because during deep sleep blood flows to your muscles rather than to your brain, thereby rejuvenating your physical energy.

Our body’s natural behavior gives us other clues to the importance of deep sleep. For example if for any reason you don’t get enough sleep one night your brain will compensate for this by increasing the percentage of deep sleep obtained the next night. Remember also that most deep sleep occurs during the early sleep cycles, which may be a clue of the relative importance of this stage: it occurs in the period that is least likely to be missed. What is the one most important thing we can we learn from all this? Since deep sleep is what replenishes your physical energy (and since our focus is on maximizing energy), then deep sleep is equal to quality sleep. Deep sleep is the most rejuvenating stage of sleep, and you get most of your deep sleep in the early sleep cycles. Your sleep then becomes gradually lighter as the night progresses, which means that the quality of your sleep diminishes. Your ability to control and maximize deep sleep rests upon your ability to control your underlying natural sleep clock. This is your built-in sleep system that governs your sleep.

Chances are you are doing many things that are systematically making a mess of your natural sleep rhythm. Most people in the western world engage in a plethora of activities that suppress the deep sleep stage, keeping you in lighter, less physically restorative stages. We will examine these factors later on, but first I will give you an understanding of how this inner sleep system works.