Related Clues:
- Muscles targeted in Russian twist exercises
- Plank exercise targets
- Heart or centre
- Muscles seen at Muscle Beach
- Baked-apple removal
- Obliques neighbors
- Required courses
- Anti-lock brakes, for short
- Blood types associated with small muscles
- Ms. Olympia's six-pack
- Some core muscles, briefly
- Crunches strengthen them
- Nuclear reaction site
- Muscles strengthened by belly dancing, for short
- Muscles worked by planks