What are the 12 major muscle groups?

The 12 major muscle groups are:

1. Deltoids (shoulders)

2. Biceps (upper arm)

3. Triceps (upper arm)

4. Chest (pectoralis major)

5. Lats (latissimus dorsi)

6. Back (erector spinae)

7. Abdominals (rectus abdominis, obliques, transversus abdominis)

8. Glutes (gluteus maximus, gluteus medius, gluteus minimus)

9. Quadriceps (front thigh)

10. Hamstrings (back thigh)

11. Calves (gastrocnemius, soleus)

12. Forearms (flexors and extensors)