The next time your “smart” watch tells you that you only got 45 minutes of deep sleep or your sleep score has dropped below 70, take a moment to breathe calmly

The analysis of a massive sleep dataset mainly shows that sleep is not a mysterious process over which you have little control. On the contrary, small and consistent behavioral changes can already make a big difference.

Light is a powerful signal for the body. It influences our biological clock, sleep, mood, and cognitive performance. But it’s not just about how bright the light is. It also matters when and what type of light we’re exposed to.

According to the American Academy of Sleep Medicine and the American Academy of Pediatrics, young people between the ages of thirteen and eighteen need eight to ten hours of sleep per night for optimal health and development. Yet the majority do not meet this standard

We tend to think that fatigue is about the number of hours we sleep. Eight hours is good. Seven is borderline. Six is a problem. But what many people don’t realize is that you can sleep a perfect eight hours and still feel exhausted. Not because you lack sleep, but because you lack regularity.

Do you always sleep with your bedroom door closed, even if you live alone? That is probably not a random habit. Many people do this almost automatically. The door closes, the light goes off, and only then does it feel like the night can begin. What is interesting is that, according to research, this small ritual says a lot about your personality

It’s the paradox of the insomniac: the harder you try to sleep, the more difficult it seems. But why does this happen? Why can’t we sleep, precisely when we want it so badly?

Lying awake is rarely a matter of not being tired; it’s often a matter of not being able to stop thinking. Rumination — endlessly chewing over thoughts — keeps your system alert when you want to switch off. One technique that tries to break this pattern is the cognitive shuffle, developed by cognitive scientist Luc Beaudoin

We’ve grown accustomed to the idea that a healthy night’s sleep means one solid block of 7 to 9 hours. But science shows what historical research has long suggested: humans may not naturally be “one-stretch sleepers.”