Sleep trackers — wearable devices that monitor all your vitals — provide detailed summaries of your sleep cycle so you know ...

Caffeine shifts brain activity during sleep by increasing EEG complexity and reducing long-range temporal correlations, ...

Sleep apnea could be costing you brain power and increasing your risk of dementia and Alzheimer's disease, a new study says.

“Some other ways to improve sleep for our memory and cognitive life are to avoid exposure to light (particularly blue light) ...

Experts recommend adults sleep between 7 and 9 hours a night ... each important in its own way. Stage 1 Non-REM sleep Heartbeat, breathing, and eye movements slow down. Stage 2 Non-REM sleep ...

This state of decreased activity is also a more effective time for the body to heal injuries and fight infections.

The study found the brain changes were strongly associated with the severity of drops in oxygen levels during rapid eye movement (REM) sleep. The study does not prove that sleep apnea causes this ...