For over 18 years - Jupiter Fitness Center has become the place to get fit.. We take pride in catering to all your fitness needs, whether it's losing weight, or just a program to get you in shape. Our 20,000 square foot facility is clean, comfortable, and well equipped with over 175 pieces of equipment. ................. AND - We are the only gym that. "$$$ PAYS YOU TO LOSE WEIGHT $$$."