CP-AC Fitness, Chelsea Piers Connecticut's 65,000-square-foot adult membership fitness center and clubhouse offers the most extensive fitness and training options in Fairfield County.. Six spacious class studios with 110+ classes a week,including multi-disciplinary and hot yoga,Pilates,Pilates Reformers,cycling,cardio,barre,body sculpting,TRX,circuit training and kickboxing; state-of-the-art cardio; strength and functional training zones; Court Rental and Reservation Privileges for Squash and Tennis; Member-only Adult Lap & Family Swim.