How to do it
Inhale before each tuck and exhale sharply as you crunch.
- 1
Lie flat on your back with your hands by your sides or under your glutes for support.
- 2
Keep your legs together and straight, then lift them off the ground slightly.
- 3
Tuck your knees into your chest while lifting your hips off the floor.
- 4
Slowly extend your legs back to the starting position without letting them touch the ground.
- 5
Repeat for the desired number of repetitions.
Expert tip
Control the movement both on the way in and out to keep constant tension on the abs.
Common mistakes
- ✕Lifting the head and shoulders off the floor
- ✕Arching the lower back away from the floor
- ✕Failing to lift the hips during the tuck