Lie flat on either the ground or a mat with the legs fully stretched out. To stretch the right leg, bend the right leg and place the strap across the ball of the right foot. Hold the strap in both hands. Keep the left leg extended on the ground with the foot flexed. This should push the thigh and calf toward the floor. Slowly extend the right leg with the foot flexed. The right leg should be straight with a slight bend in the knee, and the bottom of the foot should face the ceiling. Gently pull the strap until there is a slight tension in the hamstrings.