How to do it
Press your lower back flat against the floor throughout each repetition.
- 1
Lie flat on your back with arms and legs spread out in an 'X' shape, holding a dumbbell in your right hand.
- 2
Perform a crunch by lifting your right hand towards your left leg while raising the left leg.
- 3
Slowly return to the starting position.
- 4
Repeat for the desired number of repetitions before switching sides.
Expert tip
Focus on keeping your arm and leg straight as you perform the crunch to maximize engagement of the targeted muscles.
Common mistakes
- ✕Bending the neck forward during the crunch
- ✕Raising the extended leg past vertical
- ✕Jerking the torso up with momentum