Sleep is kind of a big deal. It’s the best way for our bodies to recover after a hard day, and it also greatly influences our cognitive functions and immune responses. Yet while many of us focus on ...

Sleep Cycles: One rapid eye movement (REM) stage and three non-REM stages that altogether last about 90 to 120 minutes Benefits: Physical and mental recuperation and memory consolidation Disorders: ...

You may remember little to nothing when you wake up, but there’s a lot going on while you sleep. You just spent the previous seven to nine hours moving through a highly structured cycle of sleep ...

Broadcast Retirement Network's Jeffrey Snyder discusses the impact of poor sleep on your daily mental health and cognition ...

Sleep is a fundamental aspect of our lives. It is a natural process that rejuvenates our bodies and minds, allowing us to function optimally during our waking hours. However, not all sleep is the same ...

When you picture the ideal night of sleep, what comes to mind? For many people, it’s (at least) eight blissful hours of uninterrupted snoozing. There’s no sound of snoring in your ear. No ...

This article was reviewed by Felix Gussone, MD. "Stiffness" is often considered a sign of male arousal, but it’s not uncommon to experience it even when you’re not turned on. Nocturnal arousal refers ...

When a person is asleep, their core body temperature drops. Heart rate and breathing also slow down and overall metabolic activity decreases by about 10%. A sleeping body may seem inactive at first ...

Learn facts about sleep, during which the body rests, recuperates and performs essential repairs. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.