New research on exercise intensity, morbidity, and longevity tests the epidemiological wisdom of Aesop’s “The Tortoise and the Hare” fable. According to the fable, slow and steady wins the race. But research suggests that shorter and faster bursts of exercise can help us live longer.

It’s not always possible to spend an hour or more getting out exercise in each day. What can be doable, however, is doing these quick bursts of activity.

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