Related Clues:

• Sit-up focus
• They're crunched in a workout
• Braking sys
• They're ripped on some calendars
• Bowflex target
• Chiseled muscles
• Muscles worked by sit-ups
• They may be sculpted
• Stomach 'six-pack'
• Muscles in the gym
• Midriff muscles
• Workout targets, perhaps
• Playing hooky, maybe: Abbr
• They get crunched in gyms
• Hunk's display