TED & Talks

What is melatonin — and should you take it to fall asleep? | Sleeping with Science

Melatonin is the hormone that tells our brains and bodies it’s time to sleep. But if you think melatonin supplements will significantly improve your ability to fall asleep and stay asleep, you may have been misled. Sleep scientist Matt Walker shares how this “hormone of darkness” really works.

Sleep — we spend one-third of our lives doing it, but what exactly do we get out of it? And how can we do it better? In this TED series, sleep scientist Matt Walker uncovers the facts and secrets behind our nightly slumber. Check out more episodes on TED.com: https://go.ted.com/sleepingwithscience

Visit http://TED.com to get our entire library of TED Talks, transcripts, translations, personalized talk recommendations and more.

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