Leg curls strengthen the hamstrings muscles.



In case you cannot see the video, here is a still sequence -

hamstrings curl with swiss ball

The hamstrings curl with a Swiss ball helps to build up both the hamstrings and the lower back muscles.

Lie on your back on a firm surface, with your hands by your side. Position your feet on the Swiss ball.

hamstrings curl with Swiss ball

Straighten your lower back so that your body makes a straight line and your bottom lifts off the surface.

hamstrings curl with Swiss ball

Bending the knees, roll the Swiss ball towards your buttocks.

hamstrings curl with Swiss ball Keeping the bottom up, roll the ball back to the starting position, and then back to the buttocks and home again. Repeat the exercise 10 times.