How to do it
Press your lower back flat against the floor throughout each rep.
- 1
Lie on your back with knees bent and hands behind your head.
- 2
Have a partner hold your feet or hook them under a sturdy object.
- 3
Pull your heels towards you to engage your hamstrings.
- 4
Perform a sit-up by lifting your torso towards your thighs while keeping the neck neutral.
- 5
Slowly lower back down to the starting position.
Expert tip
Actively contract your hamstrings by pulling your heels towards your body to deactivate the hip flexors, making the abs work harder.
Common mistakes
- ✕Jerking the torso up with momentum
- ✕Pulling on the head with the hands
- ✕Dropping backward too fast on the descent