Related Clues:
- They may be crunched at the gym
- Sit-ups work them
- Infomercial muscles
- Hunk or babe's asset
- "Six-pack" muscles
- "Washboard" body parts
- Subject of some infomercials
- Model's six-pack
- Tchr.'s notation
- Muscles worked by crunches
- Focus of some gym reps
- Sculpted body parts
- Six-pack set
- What sit-ups strengthen
- Sch. attendance notation