What action should be performed in the Thigh Stretch?

The Thigh Stretch is specifically designed to enhance flexibility and stretch the muscles in the thighs, particularly the quadriceps. The action of pulling the ankle toward the buttocks effectively engages the quadriceps by placing them in a stretched position. This movement not only helps to improve flexibility in the thigh area but also promotes stability and function in physical activities.

Additionally, keeping the focus on pulling the ankle toward the buttocks ensures that the stretch is directed to the right muscle group, whereas other options do not address the primary intent of this stretch. For instance, keeping both legs straight may not effectively target the thigh muscles, while crossing the legs diverges from the intended stretch. Lifting the upper body off the ground can take the emphasis away from the stretch itself and could potentially lead to improper form. Thus, pulling the ankle toward the buttocks is the correct action as it aligns directly with the primary goal of the Thigh Stretch.