Runners get shin splints. Skiers get torn ACLs. Why? The repetitive nature of any sport takes a toll on our bodies’ weakest points. The good news is that the cure for most of these injuries is also the surest way to prevent them: reinforcing those weak links. Vern Gambetta, whose Gambetta Sports Training Systems in Sarasota, Florida, specializes in whole-body fitness and rehabilitation, offers the following exercise prescriptions to forestall some of the most frequent sport-specific injuries.