Can you sleep less and still feel rested

Chronic sleep deprivation of less than 7 hours per day poses a health risk, as it increases the chances of depression, obesity, high blood pressure, diabetes, strokes, and heart disease. Sleeping for only four hours is not enough to allow the body and brain to recover, leading to a decline in both mental and physical performance over the long term. Although there are rare exceptions for some individuals who possess a genetic mutation that enables them to sleep less than 6.5 hours without apparent health effects, generally speaking, sufficient sleep is fundamental to overall health. It cannot be compensated for by attempts to improve sleep quality through avoiding screens, caffeine, or short naps—especially if sleep deprivation accumulates over time.

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