Too Much Exercise Could Be a Bad Thing

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By Molly Clifton

Vigorous exercise is good for you, but some cardiologists say too much could be a bad thing.

A warning published in the journal Heart says it's best to limit vigorous exercise to 30 to 50 minutes a day.

Researchers say the idea that more high intensity workouts is beneficial is a myth and that evidence shows it can do more harm than good to your heart.



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