To find out how each sport works our leg muscles differently, leading to differing strengths and physiques between runners ...

Hint: It has to do with your gluteus medius, as Dr. Amy West explains in the latest installment of, "The Doctor is In." ...

Running a marathon is one of the toughest challenges the human body can take on. Every step puts stress on your bones and muscles. As you run, tiny bits of damage occur in your legs, and your muscles ...