The Types, Causes and Prevention of Music-Related Injuries: Musicians are prone to injury from repeating a motion countless times when practicing. A better understanding of music injuries is vital for musicians' health.
One area that music students (as well as working musicians!) tend to ignore is stretching. Musicians are, in fact, small muscle athletes. It is important to take care of those delicate muscles that we have, not only to prevent repetitive strain injuries, but to ensure that we can enjoy making music for many years.
Here's a quick video from my Practicing Music 101 series with seven warm-up stretches for the hands, arms and shoulders: