How to do it
Press your lower back flat into the floor for the entire crunch.
- 1
Lie on your back with your hands behind your head and knees bent outwards, soles of your feet touching.
- 2
Contract your abdominal muscles to lift your head, neck, and shoulder blades off the floor.
- 3
At the same time, press your heels together and lift your knees towards your elbows.
- 4
Slowly return to the starting position, keeping the tension in your abs.
- 5
Repeat for the desired number of repetitions.
Expert tip
Focus on contracting your abs during the crunch and keep the movement slow and controlled.
Common mistakes
- ✕Pulling the neck upward with the hands
- ✕Letting the feet separate as the knees lift
- ✕Yanking the elbows up instead of curling