Once a nap extends beyond 30 minutes, the brain transitions into slow-wave sleep, making it much harder to wake up.

For most of us, getting less than seven hours of sleep translates into grogginess, sluggish thinking, and an overwhelming urge to crawl back into bed. But some people wake up fresh and energized after ...

Discover morning rituals that radically improve daily performance and mental clarity. These simple practices take minutes but ...

Fragmented sleep is associated with the pathogenesis of metabolic dysfunction-associated steatotic liver disease (MASLD).