Raising and lowering the upper body in a supine position (trunk bend) ► crunch

Individual work

Supine position (head on the wall bars/tree), legs up, arms stretched vertically upwards, elastic band attached to the wall bars/tree at hand height, grasp the elastic band with your hands, lift your head and shoulders off the floor, stretch your arms to your knees (lift your upper body at the same time, release your shoulder blades from the floor) and return to the starting position.

Attention:
Curl the upper body (head starts first) and never lower the upper body completely (maintain tension).

Lighten:
Choose a rubber band with less resistance.

Harden:
Choose a rubber band with greater resistance.

Variant:
Pass both arms past the knees alternately to the left and right.

1 elasticated rubber band
1 wall bar/band