Top 10 hamstring exercises to strengthen, tone & shape the back of your thighs! The hamstrings consist of three muscles located at the back of the upper thigh. These muscles are responsible for flexing the knees and assisting the glutes when we move the thigh backward and extend the hip. Working the hamstrings helps tone and shape the back of the thighs, lifts the glutes and increases speed and endurance. If strong, sculpted hamstrings are what you're after, add these 10 exercises to your…