- ОсновныеВторичныеТретичные
- Сложность
- Beginner
- Хваты
- None
- Lay on a ball or a Bosu ball with your feet firmly planted on the floor.
- Lean all the way back until you feel a stretch in your abdomen.
- Crunch upwards and hold for a 1-2 count.
- Slowly return to the starting position and repeat.