Leg Curl

The leg curl is an exercise designed to isolate the hamstring muscles in the legs. Leg curls involve a machine that has the user laying face down, with their legs straight.
It can also help athletes improve their speed. The leg curl is an exercise that can be found in most gyms, and is one of the most popular lower body exercises. Proper form must be used when performing this activity, so that it can be used to isolate the hamstrings, rather than overworking the lower back.