Not getting enough of the deeper stages of sleep raises the risk of brain deterioration associated with Alzheimer’s disease, a new study finds.

Deep sleep is one of the most essential stages of the sleep cycle, playing a vital role in how well you feel both physically and mentally. Often referred to as slow-wave sleep or delta sleep, this ...

A quick nap with deep N2 sleep could unlock hidden insights, as scientists find brainwave patterns during sleep best predict those breakthrough moments. Study: N2 sleep promotes the occurrence of ‘aha ...