Lead Teacher/ Child Care/ Preschool/ Me and Mommy Infant and Toddler Classes. We want you. Teaching Full-time and part-time positions are available at My Gym. About the Company. My Gym Children’s Fitness Center offers the BEST recreational fitness and gymnastics programs and blowout birthday parties for children ages 6 weeks to 10 years of age. If you’ve never heard of My Gym, please visit our website, Instagram, or Facebook and get to know us. w...