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The Guardian - UK
The Guardian - UK
Lifestyle

3,967 steps a day: the new magic number for a healthy, happy life?

Picture of someone's feet and ankles. Person wearing black trainers, black socks and black leggings.
A step too far? Photograph: Rapeepong Puttakumwong/Getty Images

Name: Walking.

Age: Presumably since our ancestors replaced fins and gills with legs (so, 300m to 400m years, give or take).

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