- External Obliques - improves capacity for stable side-bending and waist-twisting.
- Internal Obliques - as above (they work together).
- Rectus Abdominis - improves sports performance, especially jumping. This muscle is also responsible for giving the famous 6-pack look. This muscle group is absolutely essential for maintaining good posture and responsible for flexing the lumber spine, breathing, coughing and bowel movement
- Transverse Abdominis - increases the ability to lift heavier and holds the entire abdominal structure together.