Performing the: A Step-by-Step Tutorial Janda Sit-up
Have a partner hold your feet down or anchor them under a sturdy object, then push your heels into the ground as if you are trying to pull your body forward, engaging your hamstrings.
Place your hands on the sides of your head, but do not pull your neck or head up with your hands.
Using your abdominal muscles, slowly lift your head, neck, and shoulders off the ground towards your knees, keeping your lower back on the floor.
Lower yourself back down slowly to the starting position, maintaining the tension in your hamstrings throughout the movement.