At 56, Jennifer Aniston stays in shape with weightlifting and bursts of cardio — and you won't beat her at a plank, her trainer said.

On average, Americans take just under 5,000 steps a day. It’s a concerning number, given that public-health researchers consider a daily step count of less than 5,000 to be sedentary, and sedentary ...

Walking 10,000 steps per day has become a popular goal in the modern age, but it turns out this benchmark might not be the fitness gold standard after all. According to a study published in The Lancet ...