Hi, Repetitive Strain Injuries are often caused to endurance athletes and those who train for long hours, everyday, using the same muscle, ligaments, bones etc causing to strain them.These injuries are pesky as they take time to heal and in some cases return on resumption of the sessions. They can also be very painful conditions. RSIs often begin with mild discomfort in the form of pain but if uncared for, get worse. Sometimes the pain may disappear after a few minutes of beginning giving the false sense of minor trouble. RSIs are more common with wrists, ankles, shins, neck etc. Symptoms may include numbness in the affected body part or tingling on holding objects or straining apart from the pain.