Camp Crystal Lake, 350 Reardon Dr, Saint Louis, MO 63122, US

Kelly's offers something for everyone. In fact, the motto at this gym is, "Families that kick together, stay together." All ages can choose from a wide range of activities and classes including cardio kickboxing, boot camp, cage fitness, pilates, yoga, personal training, nutrition, martial arts, self-defense, hapkido, boxing, tae kwon do and tai chi. Some classes are designed especially for little ones and for children with special needs. Kelly's also offers after-school programming, summer camps and birthday parties. Be sure to check its website for current class schedules and to download a certificate for new students to try a week's worth of classes for free. Kelly's believes that "families that kick together, stick together."