How to do it
Keep your lower back pressed flat to the floor.
- 1
Lie on your back with your hands behind your head, elbows flared.
- 2
Bring the soles of your feet together and let your knees fall open to the sides.
- 3
Contract your abs to lift your head, neck, and shoulder blades off the floor.
- 4
Slowly lower back down to the starting position.
- 5
Repeat for the desired number of repetitions.
Expert tip
Engage your core throughout the exercise and exhale as you crunch upwards to maximize abdominal muscle activation.
Common mistakes
- ✕Yanking the head forward with the hands
- ✕Lifting only the head without the shoulders
- ✕Letting the feet separate during the crunch