According to the plugin, stretching is important for athletes to prevent muscle tightness and injuries. There are two types of stretches: dynamic (controlled movement) and static (holding a position). Did you really stretch? Well, here's what the plugin says. Stretching is primarily performed by athletes to prevent muscle tightness, which in turn prevents injury. There are two types of stretches, dynamic and static. In dynamic stretching, they are doing a controlled movement for time, while in static stretching, they are holding a position for time.