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 ...

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 ...

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 ...

Chances are, if you’re reading this, you got some sleep last night. But are you feeling rested? Experts say it's an important question to consider. Most of us spend a third of our lives sleeping, but ...

Sleep may be the foundation of health, but there’s a lot of confusion around it. How much to get? How to make it easier? And if a watch tells you your time in bed sucked, did it? Thanks to smart ...

Can better sleep help prevent or delay neurodegenerative diseases? Millions suffer from dementia worldwide, yet the relationship between sleep disturbances and cognitive decline remains complex. In a ...

Some people bounce out of bed after six hours while you struggle to function with less than nine. If you’ve ever felt guilty about needing more sleep than others, science has vindication for you. Your ...