Raising and lowering as well as rotation of the upper body with the leg on the back (trunk bend) (left) ► rotational crunch

Individual work

Lying on your back, place one foot (left) on the other bent leg (knee), one arm (left) stretched out to the side, the other arm (side of the bent leg) bent next to your head, raise and lower your upper body (move your elbow to the knee of the supported leg/lead it diagonally upwards).

Attention:
Do not lower your upper body completely (constant tension), do not pull your head with your hand (place your hand next to your ear).

Lighten:
Lift your upper body less.

Harden:
Lift your arm outstretched (not bent next to your ear), possibly even diagonally upwards with additional weight.

1 weight cuff/dumbbell ► Make the exercise more difficult (additional weight)