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 ...

Although children can sleep well, most adults have trouble getting a good night’s sleep. They go to bed each night, but find ...

It has been known for nearly 20 years that slow, synchronous electrical waves in the brain during deep sleep support the formation of memories. Why that is was previously unknown. Now, writing in the ...

Waking up to multiple alarms? Expert says it’s a clear sign you’re not getting enough sleep. Here’s how poor sleep affects ...

Insomnia, a common sleep disorder, can make it hard to get some shut-eye. Late-night screen time, jobs, and social events can ...

Can't get to sleep in the heat? Sleep specialists share simple, expert-backed ways to stay cool and sleep better on hot ...

Why these startup founders and business leaders all swear by a $3,000 temperature-controlled bed cover—and why one chucked ...