There isn't a runner alive who hasn't suffered at one time or another from a simple ankle sprain. It is - by far - the most common injury that puts runners on the injury list. According to the American Orthopedic Foot and Ankle Society, physicians see more than a million patients a year complaining of ankle sprains.
Hamstring injuries can be brutal. The powerful muscles in the back of your legs can become tight and very sore from running. Left untreated, hamstring soreness can worsen to the point where the pain is so severe that even walking or sitting is difficult. Making matters worse, severe hamstring injuries can take forever to heal. [...]