When you’re short on sleep and your focus suddenly drifts, your brain may be briefly slipping into cleanup mode. Scientists ...

And throughout that fortnight, they wore a sleep-engineering headband when they went to bed. The device detected when the participants entered rapid eye movement (REM) sleep (so named because the eyes ...

If you find it hard to focus after a wakeful night, it’s because your brain is busy trying to catch up on crucial housekeeping.

Sleep apnea is a disorder characterized by repeated obstructions or collapses of the upper airway during sleep. These interruptions to breathing reduce the amount of oxygen in the blood. Stroke ...

Sleep is essential to mental-emotional health and well-being. The relationship between the amount and quality of sleep a person gets and their mental-emotional health is reciprocal. Sleep both affects ...