Short bursts of exercise are key
 | PHOTOGRAPH BY CORY RICHARDS, NAT GEO IMAGE COLLECTION
| | 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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 | | PHOTOGRAPH BY FRITZ HOFFMAN, NAT GEO IMAGE COLLECTION | | | Not so fast: The benefits of fast breaks in your day don’t outweigh what you gain by regular exercise, researchers note. (Pictured at top, a group gathering at the Singapore Botanic Gardens to exercise.) Strength work and stretches (pictured above) help balance and flexibility and could play a role in keeping the brain healthy, perhaps staving off or lessening Alzheimer’s. Read more. | | | |
 | | PHOTOGRAPH BY DAVID MDZINARISHVILI, REUTERS | | | |
 | | PHOTOGRAPH BY CHRISTOPHER A. JOHNS | | | Where is this moth? The U.S. dime shows just how small adult Philodoria micromoths are. They often go unnoticed in the field, but in this previously unpublished photo from our archives, Nat Geo Explorer Christopher A. Johns encountered one, about as big as your eyelash. Where? Click here to find out. | | | |
 | | PHOTOGRAPH BY CLARA VANNUCCI, INSTITUTE | | | |
 | | PHOTOGRAPH BY REBECCA HALE | | Come back alive: For 17 years, National Geographic nurse manager Karen Barry has advised journalists, photographers, and explorers on how to stay safe and healthy as they head out into the field. Close calls? You betcha. Listen to her adventures on our podcast, Overheard at Nat Geo.
Related: Nurse Karen’s top travel tips
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Today’s soundtrack: Mi Tierra Veracruzana, Natalia Lafourcade
We hope you liked today’s newsletter. This was edited and curated by Sydney Combs, Jen Tse, and David Beard. Have an idea or a link for us? Write david.beard@natgeo.com. Happy trails!
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