how to workout when you're busy

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Why you're tired: You've been working out too much.

What to try: Do something easy that gets you going, but not so much that it makes you sweat or pant: Play Frisbee with your kids or dog, take an easy yoga class or ride your bike to the movies.

Why it could help: Overtraining is caused by a lack of recovery time, and it can put you at risk of injury. Contrary to what most of us expect, though, experts say that the best kinds of "rest days" involve light, non-challenging activity that enhances circulation. By getting the blood flowing in this way, you'll heal better, get more nutrients to your body and allow your muscles to regenerate faster than if you had spent the time "resting" in front of the TV.