Open seven days a week, the Springfield JCC Health and Fitness Center revs up bodies with a plethora of popular classes on land and in its Olympic-sized pool. Upgrade your physique with a BodyPump class, which teaches the original barbell-based full-body weightlifting regimen created by the Olympian Les Mills. Or sway your way toward lean muscle tone with a Zumba class, which fuses Latin and international rhythms to create a fat-exhausting South American fitness-and-dance party. The aquatically inclined may perform water aerobics in the pool to receive the cardiovascular benefits of aerobic exercise without stressing tender joints. Opt for enrollment in the masters swim program, and gain access to classes for beginners, advanced swimmers, aspiring triathletes, and those who are tired of swimming in seas of ambiguity.