The big group of muscles and tendons in the back of the thigh are called the hamstrings. injuries
in this powerful muscle group are common, especially in athletes. The most common type of hamstring injury is a strained hamstring or hamstring tear. You can tear or strain your hamstring from not having properly warmed up, having tight hamstrings, or from sudden sprinting, running or jumping motions. Though these injuries can be very painful, they will usually heal on their own. Wrapping your hamstring up with a compression sleeve
will help alleviate the pain and keep the muscle warm. If you’ve previously injured your hamstring, wearing a sleeve will help provide the additional support your muscles need.