How to do it
Squeeze your obliques for one second when the elbow meets the knee.
- 1
Lie on your back with your knees bent and feet flat on the floor.
- 2
Place your hands lightly behind your head without interlocking your fingers.
- 3
Curl up and bring your right elbow towards your left knee while lifting the left knee to meet it.
- 4
Lower back down to the starting position.
- 5
Repeat the movement with the left elbow and right knee.
- 6
Continue alternating sides for the desired number of repetitions.
Expert tip
Ensure you're not pulling on your neck with your hands; the movement should come from your core.
Common mistakes
- ✕Using momentum to bounce off the floor
- ✕Rotating the torso without lifting it
- ✕Letting the torso fall back to the floor