How to do it
Space your feet hip-width apart and keep your knees stacked over them.
- 1
Lie on the floor with your knees bent and feet flat.
- 2
Place your hands behind your head or across your chest.
- 3
Engage your abs and lift your shoulders off the floor.
- 4
Lower back down to the starting position.
- 5
Repeat for the desired number of repetitions.
Expert tip
Exhale as you crunch up to increase the contraction in your abs.
Common mistakes
- ✕Pulling the head forward with the hands
- ✕Letting the lower back arch off the floor
- ✕Digging the heels down to lever up