Related Clues:

• Muscles that planks work
• Muscles above the beltline
• Muscles toned by planks
• The hundred target, in Pilates
• They look good when they're ripped
• Things crunched in a gym
• Muscles stretched in cobra pose
• Six-packs, sometimes
• Crunch muscles
• Belly bumps?
• Core features?
• Chest fly targets, for short
• Plank muscles
• Pilates roll up targets
• Muscles worked by dead bugs