A new study suggests that insufficient slow-wave and REM sleep may accelerate brain deterioration associated with Alzheimer's ...

But in reality, actual deep sleep is just a portion of the 7 to 9 hours sleep that's recommended for adults. Deep sleep — also known as slow wave sleep or N3 sleep — is still vital though ...

It makes sense that getting quality deep and REM sleep is key to our ability to function. Adults need about seven to eight hours of sleep to be healthy, while teens and younger children need much ...

It makes sense that getting quality deep and REM sleep is key to our ability to function.Adults need about seven to eight hours of sleep to be healthy, while teens and younger children need much more.

“Most adults need about 1 to 2 hours of deep sleep per night,” says Dr Dasgupta ... meditating, listening to music, doing gentle yoga, or another method — if worry and rumination lead ...