Related Clues:

• Iron-pumper's pride
• Six-pack, perhaps
• Middle muscles, for short
• Oohs' mate
• Words to the doctor
• They're often crunched
• Workout target
• Massage sounds
• Reactions to fireworks
• Mates of 51-Across
• Core group
• Sit-up target
• Patient sounds?
• Sit-up targets
• Middle manager's focus?