Exercise: the more the better?

Dov Michaeli

First published 4/21/11 on The Doctor Weighs In.

This thought occurred to me when I read that Grete Waitz died a few days ago of cancer at age 57.

Grete was a Norwegian schoolteacher, a superb runner, and a wonderful human being. She twice set the world record at 3,000 meters, and she set world records at distances of 8 kilometers, 10 kilometers, 15 kilometers and 10 miles. But her most famous accomplishments were in the marathon race. She won 9 New York marathons –a record for either men or women. In addition to her New York City victories, Waitz won the London Marathon twice, the Stockholm Marathon once and the world championship marathon in 1983.

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