Jack knife Floor
Expert Advice
Focus on using your abdominal muscles to initiate the movement, and avoid using momentum to lift your torso and legs.
How-to-do Steps
- Lie flat on your back with your legs extended and arms extended overhead.
- Simultaneously lift your upper body off the floor while also raising your legs towards the ceiling.
- Try to touch your toes with your fingertips at the top of the movement.
- Slowly lower your arms and legs back to the starting position without letting them touch the floor.
- Repeat for the desired number of repetitions.
Details
Primary
Abs70%
Secondary
Quads30%
Equipment
Body weight
Exercise Type
Strength
