Fitness and Adventure: The Great Fitness Debate: Is it true that you can exercise too much?

Fitness and Adventure on SI.com

The Great Fitness Debate: Is it true that you can exercise too much?

Dr. Michael Joyner, a renowned sports scientist from the Mayo Clinic, dissects the recent Wall Street Journal story about the potential dangers of extreme exercise and the general debate about whether or not a human can actually exercise too much.

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