Why do some people need more sleep than others?

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Why do some people need more sleep than others? By Jeffrey Kluger Editor-at-Large I don't spend a whole lot of time in bed. Give me six hours, from 11 p.m. to 5 a.m., and I'm good. Plenty of other people in my demographic require even less, while others need a whole lot more. What is it that makes hours spent in the sack such a personal thing, and when should you be concerned that you're sleeping too little or too much? READ MORE Share This Story

What Else to Read You Can Now Treat Depression With an App By Alice Park An FDA-cleared app that can help treat depression recently became available. Read More » People 50 and Older Should Now Get the Pneumococcal Vaccine By Mike Stobbe/AP The CDC's decision lowered—from 65—the minimum recommended age for older adults to get the shot. Read More » 11 Things to Say to Persuade Someone to Vote By Angela Haupt As trust in major institutions declines, people are increasingly persuaded to vote by those in their social networks. Read More » Are Muscle-Building Supplements a Good Idea? By Donavyn Coffey You don't need to take muscle-building supplements like whey and creatine. But they can help some people. Read More » What To Know About High Cholesterol in Kids By Sandeep Ravindran Detecting it could reduce the risks of heart attacks and strokes later in life. Read More »

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