Carley Millhone is a writer and editor based in the Midwest who covers health, women's wellness, and travel. Her work has appeared in publications like SELF, Greatist, and PureWow. Polyphasic sleep ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. Let's talk about one ...

Restorative sleep happens during deep sleep and rapid eye movement (REM) sleep. Deep sleep repairs tissue and strengthens immunity, while REM supports learning and memory. Nonrestorative sleep means ...

Most adults still need about 7 to 9 hours of sleep each night as they age, and needing less sleep later in life is a myth. Teenagers ages 13 to 17 need 8 to 10 hours per 24 hours. Sleep may feel ...

A sleep cycle is a physiological process that allows the brain and body to repair tissues, remove toxins, and process memories. It typically lasts 90 to 110 minutes and is repeated 4 to 6 times per ...

Source: Amy/Pixabay It goes without saying (recognizing I’m about to say it…) that sleep is important. Sleep is a basic requirement for life and is the cornerstone of physical and mental health, ...

Getting enough sleep helps your body repair and boosts your immune system. Lack of sleep can alter hormones that regulate hunger and appetite, affecting body weight. Sleep is important for managing ...

Eating foods rich in calcium can help you fall asleep and stay asleep. Iron-rich foods may improve sleep and reduce symptoms of restless leg syndrome. Tart cherries or tart cherry juice can raise ...

I'm a certified sleep science coach who has tested over 50 mattresses. Sleep trackers can measure all facets of your health, thanks to increasingly sophisticated technology and frequent updates from ...

Officially, perimenopause marks the transition into menopause. Unofficially? It ushers in a chapter that is physically and emotionally challenging for many women. During these years, hormones begin to ...

Two particular phases in your nightly routine seem to play outsize roles in cognitive health. By Mohana Ravindranath A good night’s sleep isn’t just about the number of hours you log. Getting quality ...