How Much Should I Sleep? Science Has the Answers

Posted on Categories Discover Magazine

Not getting enough sleep is tied to a host of health issues. (Credit: JimAK_Photo/Shutterstock)

Are you one of the roughly one-third of Americans who sleep less than seven hours each night? If so, I’ve got some bad news for you: you’re probably not getting enough Zs.

While you sleep, your body and brain undergo several important changes. Gradually, you get cooler. Your breathing and heart rate slow down. Chemicals that decrease your appetite are released so you don’t wake up for a midnigh

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