Hamstring Exercises
The hamstrings are mainly comprised of an inner and outer section. The inner section includes the semimembranosus (lower aspect) and the semitendinosus (upper aspect). The outer section has two heads; the biceps femoris: long head (upper aspect) and the biceps femoris: short head (lower aspect).
Hamstring injuries are among the most common in the leg region. It is highly advised to properly stretch before performing any hamstring exercises involving these muscles.