Under the umbrella of the Addison Park District, Club Fitness regales guests of all ages with 44,000 square feet worth of exercise equipment, group fitness studios, and aquatic amenities. Amid the clang of cardio and strength-training machines, certified instructors lead members through a range of free fitness classes, including Zumba, yoga, cycling, Pilates, and aquatic fitness sessions. Seasoned swimmers, 17 and older, can splash about within a six-lane lap pool, and runners can train for upcoming races by looping around the indoor running track in dramatic slow motion with arms outstretched. Those more interested in relaxation can sweat away anxieties in the hot tub or sauna. Before changing clothes within the modern locker rooms, parents can drop their tots off with the friendly attendants at the onsite childcare area.