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July 11, 2006
Muscle-Moving Machines Won't Make You
If you see ads for equipment that promises to make you fit by moving your muscles for you, save your money. Exercise strengthens your heart only when you do it vigorously enough to increase your heart rate at least 20 beats a minute above resting. Here's why the passive exercise machines don't make you fit or increase
From Muscle-Moving Machines Won't Make You
Posted by Greg at July 11, 2006 11:50 AM
