Harvard Health Letter

New physical activity guidelines: Even a little activity will help health

News briefs An update to the Physical Activity Guidelines for Americans may motivate you to move a little more. The guidelines, published online Nov. 12, 2018, by JAMA, uphold previous recommendations from 2008 that urged at least 150 minutes per week of moderate-intensity activity, such as brisk walking. But the new guidelines break from the old rule that physical activity had to be accumulated in bouts of at least 10 minutes to count…

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