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PHOTOGRAPH BY CORY RICHARDS, NAT GEO IMAGE COLLECTION
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In track or swimming practices, they’re known as intervals. A faster clip for a bit, then a return to normal speed.
In daily life, short, vigorous bursts of physical activity one or two minutes in length—such as very fast walking—are associated with a substantially decreased risk of dying, according to new research. Three one-minute bursts of intense physical activity every day can lower a person’s risk of death by up to 40 percent, researchers report.
Does that mean we can ditch the treadmills for a rapid spin around the block—or sprints up and down the stairs?
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