Related Clues:
- Corporeal stabilizers
- Crunches work them
- Muscles targeted in core workouts
- Muscles used in a Russian twist, for short
- Midsection muscles
- Part of the body that crunches work
- When they're ripped, they're strong
- Muscles in sit-ups, informally
- Muscular sextet
- Midriff muscles, for short
- Ones demonstrating strength in crunch time?
- Targets of plank exercises
- They're strengthened by crunches
- They may get crunched during exercise
- Core workout target