Discover common causes for upper thigh pain after running, including quadricep and hamstring strains, hip flexor issues, and overuse injuries.

You’re out for a long run filled with rolling hills and you start to feel the burn in your leg muscles. It makes sense: You know your lower body is working hard to propel you through your miles. Yes, ...

If you’ve ever run up a steep hill, attempted to run a longer distance than you’ve trained for, or done a handful of 200-meter repeats, you know that running can feel like a leg workout just as much ...

“Doing an activity that we aren’t used to challenges muscles to become stronger through adaptation,” says Tim Donnelly, a physical therapist and rehab regional manager with the Illinois Bone & Joint ...

A VO2 max test measures heart health and breaks down your ideal cardio zones for burning fat and building muscle.