Windows computer restarts after Sleep

Sleep is not rest. It’s repair. Most people think sleep is optional. Your brain disagrees. Teenagers need 8–10 hours because the brain is still wiring itself. Cut sleep here, and focus, mood, and memory suffer fast. Adults function best at 7–9 hours. Less than that, and decision-making, emotions, and energy decline silently. Athletes need 9–10 hours because muscle repair, hormone balance, and nervous system recovery happen during deep sleep. Pull an all-nighter, and your body needs up to 12 hour