Deep sleep refers to slow-wave sleep — a stage in the sleep cycle when brain waves slow down. Getting enough deep sleep is crucial for numerous bodily functions. But how to increase deep sleep isn’t ...

Sleeping for 7 to 9 hours at night isn't the only way to catch some z's. Here are four alternative sleep cycles -- and they're pretty obscure. Annie Miller Medical Reviewer Annie Miller is a licensed ...

With daylight saving time fast approaching, our sleep cycles are about to get thrown for a loop. But don’t panic — you don’t have to rely on pharmaceutical sleep aids that leave you groggy or tired.

The internet claims waking at the end of a sleep cycle will leave you refreshed, but experts aren’t convinced. By Clarissa Brincat Published Sep 9, 2025 9:00 AM EDT Image: DepositPhotos Get the ...

Sleep Lean is meticulously designed to regulate the natural sleep cycle, thereby creating a supportive foundation for effective weight loss. It aims to accelerate the metabolic efficiency of the body ...

Ever wonder why some mornings you wake up ready to go, and others you feel like a zombie? The difference often comes down to when you wake up during your sleep cycle, and that’s exactly what a sleep ...

Forbes contributors publish independent expert analyses and insights. I'm a science journalist specializing in healthy aging and longevity. As we age, we often experience changes in our sleeping ...

Ever woken up multiple times at night, groggy and frustrated, just to rush to the bathroom? You might blame your bladder, or ...