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Now we have dealt with the importance of sleep and its effect on our metabolism. Find out what lowers our sleep quality and what we can do to sleep better.

Let’s start with the essential factor — daily circadian rhythms, mainly meaning activity, eating, and sleeping regularity. Human biology has developed a strong need for circadian rhythms for millions of years, and we can’t expect it to change in a couple of human generations. What should you do? Strive to create routines that help improve sleep regularity. Even if you’d sleep only 6 hours every night, sleeping regularly helps a lot as it gives our brains an option to regulate critical physiological processes on a daily schedule.

What to do?

Okay, we’ve got our circadian rhythm in order, but there’s still not good quality or enough sleep. What next? The next thing on our list is so-called sleep hygiene. What it means is creating the best conditions for quality sleep. Sleep hygiene must not be underestimated since it’s the second most important factor in sleep quality and length. Let’s go over the most important things that affect your sleep hygiene (there are tens or hundreds of things altogether; you should research the subject more if it is a challenge).

-Temperature. Our hormonal and nervous systems react to outside conditions much more than we realize. When we talk about sleep quality, the temperature is one of the most critical factors. Once again, it comes down to biological circadian rhythms. Like in our caveman days, when the sun went down, the air temperature went down, signaling our brains to secrete melatonin to get us sleepy. We should use this physiological reaction and keep our sleeping environment a couple of degrees colder than the daily living environment. Taking a shower or bath or walking also lowers body temperature. For sleep to be good quality all night, the temperature should be lower for the whole duration. There is debate about the perfect temperature, but it is around 18 degrees Celsius or 64 degrees Fahrenheit for most people.

Those were the most important outside factors, but there are intrinsic factors.

Besides taking care of the daily rhythm and sleep hygiene, many other things affect our sleep. Let’s go over those briefly.

Stress. Most of us have stayed awake at some point in our lives of stress. It even might have been positive excitement. Staying awake a couple of nights is no big deal, but it becomes a problem when pressure keeps us from sleeping for weeks or even months. We mostly turn to doctors to prescribe us sleeping pills in those cases. But it’s only the symptomatic treatment, and sleeping pills will never replace normal sleep. Sleeping pills affect the sleep structure negatively, and even though you might be sleeping 8 hours a night under their influence, the actual quality of sleep translates to 5 hours. Most sleeping pills are very addictive, making them even worse sleeping aids. If you need to take sleeping pills, choose the ones that aren’t in the benzodiazepine category. The point is that you have to deal with your stress, not just the symptoms. There will be more about anxiety in a different chapter.

You are getting enough sleep. This is the one thing we mainly talk about when talking about sleep and health. Each of us has our own optimal sleep time. For most of us, it’s around 8 hours, very rarely it’s below 7 hours, and over 10 hours naturally. Sleeping too little is like being a little drunk. One can’t tell the difference, but the effects might be catastrophic. Sleeping 1-3 hours too little every night for years takes off years from your life and destroys the metabolism and brain function. How do you sleep more if you have been on the same schedule for years? It’s a slow process. You should create a 3-6 month plan for yourself, and after the priorities have been taken care of (sleeping rhythm, hygiene, etc.), you should start adding 10-20 minutes per week to your sleep. It isn’t easy and won’t happen every night, but it will improve your sleep quality and quantity over time. Just stick to the plan.

Blue light. Blue light is the blue spectrum of light. It has been shown to suppress normal melatonin secretion in studies. Melatonin is the hormone that signals the brain to “get sleepy.” So it’s natural that the more blue light we are exposed to before bedtime, the more it suppresses the normal sleepiness. Where does it come from? The blue light from intelligent devices and TV and regular lights. The best thing you can do is dim the lights and minimize your screen time 3+ hours before bedtime. The second best thing is to add a blue light filter to your devices. There are many good apps for this, most of them free. Automate the app to start filtering the blue light every evening. You’ll soon begin to fall asleep much more quickly and naturally.

This was our short overview of improving your sleep quality and quantity. Never underestimate its effect on your health and overall well-being. Even if you feel you are sleeping good enough, working on your sleep is one of the best investments you can make in improving your quality of life. It is a long process and can’t be rushed. Make a plan for yourself and stick to it. After some months, you might not recognize the new energetic and happy you!

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