Technique
Lie on your back with arms extended overhead and legs straight. Simultaneously lift your upper body and legs, bringing your hands toward your feet in a V-shape, then return to starting position.
A core exercise that combines a leg raise with a crunch movement to target the abdominal muscles and improve core strength and flexibility.
Lie on your back with arms extended overhead and legs straight. Simultaneously lift your upper body and legs, bringing your hands toward your feet in a V-shape, then return to starting position.
Begin lying on your back with arms extended overhead and legs straight on the ground.
Return to the starting position with arms overhead and legs straight after completing the jack knife movement.
Lift both upper body and legs, reach toward feet, engage core, control the movement
Using momentum, not feeling core engagement, poor form, incomplete movement
Add weight, increase reps, or perform more advanced variations.
Bend knees, reduce range of motion, or perform separate leg raises and crunches.
Maintain proper form to avoid lower back strain. Stop if you experience pain in the lower back or neck. Keep your core engaged throughout the movement.