CORE WORKOUT 17072015 Workout

For time:
100-90-80-70-60-50-40-30-20-10 reps of (choose the exercise you want in any order):
- Sit-ups.
- V-ups.
- Toe touches.
- Bicycles x2.
- Flutter kicks x2.
- Hollow rocks.
- Back extensions.
- Back plank hold.
- Lateral crunches x2.
- Russian twists x2.