For advanced V sit-ups, you'll need two fitness items: a lightweight ball and a medicine ball. This core exercise requires coordination and concentration.
Assume start position as shown by laying on floor.
Bend right leg and place a non-weighted ball behind your knee.
Keep left leg straight and hold medicine ball above head.
Slowly lift left leg as you reach ball up toward your left foot.
Return to start position and repeat on same leg 15 to 20 times.
Repeat with other leg 15 to 20 times.