Ab Workout

Super-set:

Toes to bar- 10-20 reps
Ab wheels- 10-20 reps
5 sets

Super-set:
Hanging knee-ups- 15 reps
Bicycle crunches- 50 reps
4 sets

Super-set:
Weighted crunches- 25 reps
Kneeling cable crunches- 12 reps
3 sets