How to do the Band Jack-Knife Sit-Up
- 1Lie flat on your back with a resistance band secured around your feet.
- 2Extend your arms straight out above your head.
- 3Engage your core and lift your legs and upper body simultaneously, reaching your hands towards your feet.
- 4Pause briefly at the top, then slowly lower back to the starting position.
Muscle group
Core
Type
Weights or Machine
Equipment
Resistance Band
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