WORKING OUT WORKS

You probably weren’t wondering whether exercise is good for a body, because it’s so widely accepted. But did you ever wonder how it came to be so widely accepted?

Turns out, studies seeking to determine the benefits of exercise generally rely on self-reports — and self-reports aren’t always accurate. Now a study in the journal JAMA Network has nailed it down by administering treadmill tests to more than 100,000 subjects and determining how much benefit they derived from exercise.

The answer? A ton, in non-scientific terms. “Importantly,” the authors wrote, “there was no upper limit of benefit of increased aerobic fitness.” Exercising more can extend a life at least as much as quitting smoking can, they found, adding that “health care professionals should encourage patients to achieve and maintain high levels of fitness.”

So, consider yourself encouraged.

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