Action of Prone leg curl:
1. Lie face down on the exercise machine, with the movement cushion at the back of your legs (a few centimeters below the calf).
2. Keep the torso level on the cushion, make sure your legs are fully extended, and grab the handles on both sides of the instrument with both hands. This is the starting position of the action.
3. Bend your legs as much as possible while exhaling, but don't lift the upper thighs off the cushion. When the full tension is reached, hold it for 1 second.
4. Do not restore the leg to the original posture when inhaling; repeat the action to the recommended number of repetitions.
5.The above is a complete action. Repeat the action as many times as recommended.