Related Clues:
- Double 17
- Erotic dances, exhausting old muscles
- Muscles worked by leg presses
- Leg presses work them
- College areas, briefly
- Squats strengthen them
- Targets of squats
- Outdoor lecture sites
- Any straight muscles
- Campus hangouts, familiarly
- Muscles opposite hamstrings
- Campus centers
- Campus areas, or 28-Across' hand
- Muscles in groups working together? Not initially
- Squatters build them