Great gym classes keep kids coming back session after session: it's not unusual to have former Tiny Tykes (3-11 months) continue on to Waddlers (12-18 months), then make their way through Gymsters and Gymsters Plus (19 months - 2.5 years), and end their parent participation classes as Terrific Tots (2.5-3.5 years). Awhole range of independent classes, for kids aged 3 to 10 years, are also available. Open play gym time is offered - typically after school, one day a week. Members can play for the hour on the equipment for $5. Classes run for 8 week sessions and are priced at $110/one hour and $105/45 minutes, with class duration being determined by the age of the child. Energetic teachers and well-organized birthday parties (usually held on weekends), modeled after regular classes and supplemented with balloons, decorations, set-up and service of food and refreshments, and clean-up service, make these independently owned fitness centers worth checking out. Party packages start at $250 (member) or $275 (non-member) for 20 or fewer children. Additional children, up to a maximum of 35, are $10/child. A "Deluxe" party package, for an additional $100, includes 24 My Gym invitations, plates, napkins, juice boxes, and My Gym tattoos, 4 tablecloths, and a My Gym cake. The Family Membership fee is transferable to other My Gym facilities. Check the web site for a location near you.