Jackknife Sit-Up
The Jackknife Sit-Up is a compound strength exercise using only your body weight. It primarily targets the abdominals. Suitable for beginners.
Primary Muscles
Level
beginnerMechanic
compoundEquipment
body onlyCategory
strength
Instructions
- Lie on your back with arms extended overhead and legs straight.
- Simultaneously lift your arms and legs toward each other, folding at the waist.
- Try to touch your toes at the top of the movement.
- Lower both your arms and legs back to the starting position with control.
- Keep your core engaged throughout the movement.