Related Clues:

• Muscles that 'bounce,' for short
• Muscles targeted in Russian twist exercises
• Plank exercise targets
• Chest muscles, informally
• Muscles seen at Muscle Beach
• Bodybuilders might make them 'bounce'
• Obliques neighbors
• Targets on 'chest day'
• Targets of bench-pressing
• Anti-lock brakes, for short
• Blood types associated with small muscles
• Ms. Olympia's six-pack
• Pushups build them
• Prominent muscles for Terry Crews
• Muscles in a flex-off