One Lost Hour of Sleep Can Spike Heart Attacks | Matthew Walker

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Sleep scientist Matthew Walker explains that six hours of sleep a night for years isn't neutral, it's compounding damage to your heart, your brain, your blood sugar.

One week at four to five hours of sleep and your blood sugar looks pre-diabetic. One week.

Daylight savings is basically a global experiment on 1.6 billion people. Lose one hour in spring, heart attacks jump 24% the next day.

Gain that same hour back in fall and heart attacks drop 21%. Bidirectional. Fast. Real.

Federal judges hand out harsher sentences the week after losing an hour of sleep. Their mood tanks and someone else pays for it.

We're the only species that voluntarily robs itself of sleep, so evolution never built us a safety net for it.

Shorter sleep, shorter life. Not a metaphor, an actual mortality predictor.

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