Deep sleep is the mentally and physically restorative stage of sleep. How much of it do you actually need?

Simple nighttime habits can improve deep sleep, helping the body recover, repair, and wake up feeling refreshed.

Most healthy adults spend roughly 20 per cent to 25 per cent of the night in REM sleep, while deep sleep typically accounts ...

It might be worth working a little bit harder to get that much-desired, but often elusive, good night's sleep. Deep sleep clears the mind of waste just as a "dishwasher" cleans dirty plates and ...

When it comes to managing anxiety disorders, William Shakespeare’s Macbeth had it right when he referred to sleep as the “balm of hurt minds.” While a full night of slumber stabilizes emotions, a ...

Researchers play ultra-brief tones to stimulate the brain during deep sleep. This stimulation improves cardiac output and relaxation of the left ventricle. Such technology to improve cardiovascular ...

Research has linked lack of deep sleep to memory issues in people at risk of developing Alzheimer’s disease. This isn’t the first study to tie deep sleep to Alzheimer’s risk. Experts say focusing on ...

Everything you need to know about the all-important third stage of your sleep cycle. Unfortunately, sleep is far from an exact science, so getting more deep sleep isn’t as simple as ticking a few ...

The idea that a single morning or weekend with extra hours in bed can erase a week’s worth of sleep deprivation is a persistent sleep myth.

A study conducted by researchers at the University of California, Berkeley, has found that a sleepless night can raise anxiety levels by up to 30% the following day. Image Credit: Gorodenkoff / ...