Hamstring tightness occurs when the muscles on the back of the thighs become shortened due to injury, sitting for long periods, muscle overuse, or a history of inactivity. The hamstrings consist of ...

Get the blood flowing and muscles firing with these six warm-up stretches for runners to prevent injury and feel your best.

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. Are your hamstrings ...

If you can’t touch your toes without majorly bending your knees, that’s a sure sign you could benefit from doing hamstring stretches. But even if you can touch your toes easily, you should still be ...