Related Clues:

• Some core muscles, briefly
• Body parts that sound like some units of measure
• Crunches strengthen them
• Muscles strengthened by belly dancing, for short
• Muscles worked by planks
• Cruncher’s pride
• ''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?
• Workout goal, perhaps
• Parts of a six-pack