Yesterday was my first work out since the marathon. I obviously did too much because I pulled my right hamstring. I am nervous after reading the sports pages. Sean Lee, a linebacker for the Dallas ...

The hamstring muscles are responsible for your hip and knee movements in walking, squatting, bending your knees, and tilting your pelvis. Hamstring muscle injuries are the most common sports injury.

I was tripped at the start of a 5K and pulled my hamstring, and now I can’t run without pain. Friends tell me to try to run taking small steps. I want to return to running as soon as possible, as I’m ...