The CDC would be happy with these guys, who were playing in Birmingham, Ala., in July 2013. Teenage boys say basketball is their favorite activity. Mark Almond/AL.COM /Landov hide caption

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Mark Almond/AL.COM /Landov

Most Teens Aren't Active Enough, And It's Not Always Their Fault

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Playing outside can help kids — and their parents — maintain a healthy weight. iStockphoto hide caption

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iStockphoto

Adult Obesity May Have Origins Way Back In Kindergarten

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Students at Lowell High School in Michigan sit down for lunch. Shorter lunch breaks mean that many kids don't get enough time to eat and socialize. Emily Zoladz/Landov hide caption

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Emily Zoladz/Landov

These Days, School Lunch Hours Are More Like 15 Minutes

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Just knowing that someone is obese doesn't mean they would benefit from bariatric surgery, doctors say. iStockphoto.com hide caption

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iStockphoto.com

Teenagers put in more than two hours a day of TV time on average, still more than what pediatricians say is healthy. iStockphoto.com hide caption

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Small declines in obesity among young kids could help stem bigger problems in the future. Ocean/Corbis hide caption

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Ocean/Corbis

Falling Obesity Rates Among Preschoolers Mark Healthful Trend

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Adam Cole/NPR

Your Child's Fat, Mine's Fine: Rose-Colored Glasses And The Obesity Epidemic

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Napping in class may be common, but it's also a sign that kids need more sleep. iStockphoto.com hide caption

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iStockphoto.com

Sacrificing Sleep Makes For Run-Down Teens — And Parents

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A poll needs to ask about randomly selected children in households across the country to bring context to what's happening with kids like 7-year-old Henry Condes in Los Angeles. David Gilkey/NPR hide caption

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David Gilkey/NPR

A new poll explores what happens in American households during the hours between school and bedtime. Image courtesy of The Bishop family (left), The Benavides family (top right), NPR (center) and The Jacobs family (bottom right) hide caption

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Image courtesy of The Bishop family (left), The Benavides family (top right), NPR (center) and The Jacobs family (bottom right)

How 'Crunch Time' Between School And Sleep Shapes Kids' Health

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Kathy Del Tonto (far right) participates in a class that teaches school cafeteria workers how to prepare meals from scratch. LiveWell Colorado hide caption

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LiveWell Colorado

One Lunch Lady's Cafeteria Conversion

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An overweight child reads her part during a skit that was in a 2010 program promoting healthy lifestyles sponsored by Children's Hospital near Denver. John Moore/Getty Images hide caption

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John Moore/Getty Images