Here are the ab exercises in this workout video:
1. Regular crunches (30 seconds)
2. Crunches with leg lifts (30 seconds)
3. Bicycle crunches (30 seconds)
4. Reverse crunch variation (30 seconds)
5. Alternating leg drops (30 seconds)
6. Flutter kicks (30 seconds)
7. Scissor kicks (30 seconds)
8. Leg lifts (30 seconds)
9. Mountain climbers (30 seconds)
10. Plank (30 seconds)
11. Mountain climbers (30 seconds)
12. Plank (30 seconds)
13. Plank with hip twists (30 seconds)
14. Spider planks (30 seconds)
15. Side plank pulls (30 seconds each side)
16. Side plank (30 seconds each side)
17. Up and down planks (30 seconds)