reverse crunch

How to do this exercise

1. Step:1 Lie flat on your back with your arms extended along your sides.
2. Step:2 Bend your knees and lift your feet off the ground, bringing your thighs perpendicular to the floor.
3. Step:3 Contract your abs and curl your hips off the floor, bringing your knees towards your chest.
4. Step:4 Pause for a moment at the top, then slowly lower your hips back down to the starting position.
5. Step:5 Repeat for the desired number of repetitions.