The hamstring refers to one of the three posterior thigh muscles, or to the tendons that make up the borders of the space behind the knee.
The word ham originally referred to the fat and muscle behind the knee. String refers to tendons, and thus, the hamstrings are the string-like tendons felt on either side of the back of the knee. The hamstrings cross and act upon two joints – the hip and the knee.
In strength training, the hamstrings are trained in isolation with the leg curl exercise, as well as a part of several other lower body exercises. Hamstring plays an essential role in characterizing body flexibility

Legs






