It is no secret that most swimmers have or have had on some level a shoulder injury. In fact, a 2010 study illustrated tha 91% of elite swimmers between the ages 13-25 have reported shoulder pain at least once in their careers. The excessive swim volume and constant shoulder rotation for hours a day and for several years causes wear and tear to the muscles and ligaments around the shoulder joint. Similarly, the deceleration our arm experiences from recovery to the start of our pull (just as it enters the water) creates a strong torque on the joint. To help prevent injury to the shoulder, warming up the whole shoulder girdle outside of the water is especially important.