To join now, just enter your email address below and click "Get Updates!"Don't see a signup form?<a href="https://jamesclear.com/join">Send me a message here</a>and I'll add you right away.Alright, so sleep is important, but how much sleep do you really need? To answer that question, let's consider an experiment conducted by researchers at the University of Pennsylvania and Washington State University.The researchers began the experiment by gathering 48 healthy men and women who had been averaging seven to eight hours of sleep per night. Then, they split these subjects into four groups. The first group had to stay up for 3 days straight without sleeping. The second group slept for 4 hours per night. The third group slept for 6 hours per night. And the fourth group slept for 8 hours per night. In these final three groups-4, 6, and 8 hours of sleep-the subjects were held to these sleep patterns for two weeks straight. Throughout the experiment the subjects were tested on their physical and mental performance. <a href="https://jamesclear.com/sleep#footnote-1-17404">1</a>

If you're getting the recommended 8 hours of sleep, does it matter when you get it?"The time of night when you sleep makes a significant difference in terms of the structure and quality of your sleep," said Dr. Matt Walker, head of the Sleep and Neuroimaging Lab at the University of California, Berkeley.The ratio of REM to non-REM sleep changes through the night, with non-REM sleep dominating cycles earlier in the night and REM sleep kicking in closer to sunrise, Walker said. That means a late night could result in insufficient amounts of deep, non-REM sleep. As we discussed earlier, it's crucially important to get healthy amounts of both REM and non-REM sleep.

If you want to learn how to sleep better, then you're in the right place. This guide will walk you through everything you need to know if you want to get better sleep. I'll explain the science of sleep and how it works, discuss why many people suffer from sleep deprivation without knowing it, and offer practical tips for getting better sleep and having more energy.

The Science of Sleep: A Brief Guide on How to Sleep Better Every Night

Satyansh Upadhyay