Short walk once-a-week can lower risk of death

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People who walked or gardened 10 minutes to an hour each week had an 18-percent lower risk of death from any cause compared to full-on couch potatoes, researchers reported in the British Journal of Sports Medicine.

Two-and-a-half to five hours weekly of such “moderate physical activity” — broken into segments of no less than 10 minutes — resulted in a 31 percent reduction in risk.

And those who clocked up at least 25 hours almost halved the risk. Not everyone, however, has that much time to spend on leisure-time exercise, the authors acknowledged.

Heart-pumping and pulse-quickening activities such as biking, running and competitive sports are more time-efficient than moderate intensity activity

For cardiovascular disease alone, there was no additional benefit to be gained by graduating from five to 25 hours.