Exercise: Is It That Good for You?

Most Americans willingly accept the notion that physical fitness is valuable for just about everyone. Now, Stanford University Drs. Jose Montero and Kenneth Smyth have the audacity to wonder if it is such a good thing.

They searched the available literature and found two foreign studies suggesting that physical activity might indeed increase life expectancy. Then they searched a little further and found an American study that showed that it does nothing of the sort. Is there any tie-up between exercise and disease?

"Apparently susceptibility to most diseases has no relationship to fitness," they concluded from their research. Exercise, they suggest...

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