Fact checked by Nick Blackmer Taking longer to fall into REM—the dream stage of sleep—is linked to a higher risk of Alzheimer’s disease, a new study found.REM sleep is essential for learning ...

“The vast majority of adults truly need somewhere between seven and nine hours, and we offer that range because there is a ...

REM Sleep Behavior Disorder may predict Parkinson’s or dementia years in advance. Learn about diagnosis, treatment, and emerging research.

The first part of the sleep cycle is a non-REM stage called N1 that lasts from one to seven minutes. The muscles start to relax, and people are easily woken during this stage of light sleep. This ...

Try not to go to sleep any later than 30-45 minutes after your usual bedtime though, as this too can disrupt your sleep pattern. And “make sure you still get adequate sleep duration by adjusting wake ...

So, let’s break it down. In both NREM and REM sleep, brain signals were more complicated and unpredictable, showing a disruption of the usual, restful state we experience at night.

Following deep sleep, REM sleep is the next critical phase of sleep cycles, characterized by more dreaming that’s also extra vivid and lifelike, and by faster heart rate and breathing. It’s essential ...

Think you’re healthy? These 7 daily habits might be secretly damaging your health. Discover what they are and how small changes can protect your mind and body.

The Index is priced at US$170, which isn't exactly cheap for a sleep tracker without a screen or any other functionality. For what it's worth, you don't need any additional subscriptions to see ...