Band Jack Knife Sit-Up

compoundabsresistance bands
Form cues
- 1Anchor the band securely behind you and start lying flat with arms extended overhead, legs straight and slightly off the floor
- 2Simultaneously fold at the hips, driving arms and legs up to meet at the top while keeping tension on the band throughout
- 3Control the descent back to the start position rather than collapsing, maintaining band tension and a braced core