Related Clues:
- Ms. Olympia's six-pack
- Some core muscles, briefly
- Crunches strengthen them
- Muscles strengthened by belly dancing, for short
- Muscles worked by planks
- Cruncher’s pride
- Back muscles, familiarly
- ''Washboard'' muscles
- Muscles toned by crunches
- Planks strengthen them
- Six-pack in a gym
- Crunches can make them shredded
- Stopping tech
- Like swallowing first of beers in six-pack?
- They're worked with pull-ups and pull-downs