L-theanine is best used about one to two hours before bedtime for better sleep, or any time of day when you want to improve ...

The best sleep headbands provide everything from guided meditations to advanced sleep tracking. Here are our favorites from Muse, Frenz and more.

Plus, doctors’ number-one pick and their take on the devices.

The following story is excerpted from TIME’s special edition, The Science of Sleep, which is available at Amazon. Anyone who has nodded off on the subway, faked alertness in a meeting at work or ...

How does your brain know when it's time to sleep? There are two main factors: Hours Awake. The longer you've been awake, the stronger your drive for sleep. Circadian Rhythm. Your body operates on a ...

We tested six sleep masks to compare their overall comfort and ability to deliver total darkness during sleep. There’s just one we recommend buying.

Caroline Igo (she/her/hers) was a wellness editor at CNET and holds Sleep Science Coach and Stress Management certificates from the Spencer Institute. She received her bachelor's degree in creative ...