Jackknife Sit Up

An advanced abdominal exercise that engages both upper and lower abs.

Instructions

• Lie on your back with your arms extended behind your head and legs straight.
• Simultaneously raise your arms and legs to meet over your abdomen, forming a V shape with your body.
• Engage your core muscles tightly as you lift.
• Hold the position briefly at the top, then slowly lower back to the starting position.
• Repeat for the desired number of reps.

Common Mistakes to Avoid

• Using momentum instead of core strength to lift the body.
• Not keeping the legs and arms straight during the movement.
• Failing to keep the back flat on the floor when returning to the start position.

Additional Information