Why naps sometimes make you feel worse?

2026-03-23 - 07:09

Feeling groggy after a nap? Experts explain it's not laziness but a biological state called sleep inertia, triggered by waking from deep sleep stages. Short, well-timed naps (15-20 mins) boost alertness, while longer or late naps disrupt your internal clock, leading to disorientation and affecting night sleep. Understand your brain's timing for effective rest.