Add Yahoo as a preferred source to see more of our stories on Google. Running uses muscles, especially in the lower body, so that counts for something—but it doesn't quite put enough demand to make ...

This voice experience is generated by AI. Learn more. This voice experience is generated by AI. Learn more. Are humans natural born runners? Here’s why evolutionary and anatomical evidence suggests ...

Women's Health may earn commission from the links on this page, but we only feature products we believe in. Why Trust Us? Running uses muscles, especially in the lower body, so that counts for ...

Running uses muscles, especially in the lower body, so that counts for something—but it doesn't quite put enough demand to make those muscles grow in meaningful ways. "I wouldn't say running is a ...