Medically reviewed by Sohaib Imtiaz, MD Key Takeaways Deep sleep is essential for health, making up 20% to 25% of total sleep time.Not getting enough deep sleep can raise the risk of problems like ...

Medically reviewed by Smita Patel, DOMost adults need 7-9 hours of sleep for optimal recovery. During deep sleep, your body releases growth hormone that supports muscle repair. Too little sleep can ...

When you don’t get enough sleep, your whole body can feel off. In college, I tried to fit everything into my schedule, including staying up late to study and waking up early to train for a marathon. I ...

Few experiences rival the calm satisfaction of falling asleep easily and waking up feeling fully rested. But sleep is more than a luxury or idle downtime, it’s a vital biological process that supports ...

Daylight saving time ends at 2 a.m. on November 2, giving Americans an extra hour of sleep but earlier sunsets. A study shows sleep duration and bedtime vary by state. Experts say seven to nine hours ...

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: ...

We’re constantly being reminded by news articles and social media posts that we should be getting more sleep. You probably don’t need to hear it again – not sleeping enough is bad for your brain, ...

The mom of a 16-year-old night owl asks: How much sleep do teens need in the summer? Should parents wake up their teens at a semi-decent hour of the morning, or let them sleep? “He is turning into a ...