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4 Your Health: teenagers lack of sleep; the dangers the dangers - KVOA | KVOA.com | Tucson, Arizona

4 Your Health: teenagers lack of sleep; the dangers the dangers of too much and not enough exercise

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Many girls and young women are not getting enough exercise.

That's according to a new study from Duke University. It showed girls don't exercise as much as boys during adolescence and are even less active in their 20's.

Black females and those with lower incomes are least likely to do any exercise. And that means, many young women are not getting the recommended amount of physical activity.

When exercise is harmful

On the other hand, too much exercise can be harmful for people with eating disorders.

Researchers in Sweden studied over 9,000 patients with some type of eating disorder. People who exercised compulsively during treatment were about half as likely to recover than those who exercised less.

Sleep deprived teens

Teens who don't get enough sleep may have more risk factors for heart disease.

Harvard Scientists found nearly one-third of the 800 teens they studied slept less than 7 hours a night. Those who slept the least tended to have more body fat, high blood pressure, and unhealthy cholesterol levels.

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