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Related Clues:
- Muscles worked by scissor kicks
- Targets of situps
- Muscles in six-packs
- Muscles that get crunched
- Situps tighten them
- Midsection, in brief
- Crunch focus
- V-sits work them
- They get harder the more you work out
- 'Crunched' muscles
- Muscles strengthened by planking
- Muscles worked by situps
- 'Washboard' muscles, informally
- Muscles tightened by planking, in brief
- Muscles targeted by planks