How to do it
Squeeze your glutes and inner thighs together to keep the legs tight.
- 1
Lie on your back with your arms extended overhead and legs straight out.
- 2
Engage your abs and lift your arms and legs off the floor, creating a slight 'U' shape with your body.
- 3
Rock forward and backward while maintaining the hollow body position.
- 4
Continue rocking for the desired number of repetitions or time duration.
Expert tip
Keep your lower back pressed into the floor throughout the movement to protect your spine and increase the challenge to your core muscles.
Common mistakes
- ✕Bending the knees during the rocking motion
- ✕Using momentum rather than core control
- ✕Letting the extended arms drop downward