Release the weight box pawls by squeezing the handle and move the weight over the crane. Adjust the weight to your level, identical on both sides. Stand on one leg. Place a support under the other leg (the knee and foot must be outside the limits of the support). With the other foot on which you are standing, push the weight down by bending it at the knee. Repeat the exercise changing your legs.
Strengthening of the posterior thigh and buttocks muscles.