That decision is up to your physician. Tell your physician to call us at (415) 435-5099 if there is a questions about whether WaterGym is the right program for you. After you've been cleared by your physician to participate in WaterGym, call us at (415) 435-5099 so we may discuss your condition. We also may need to speak with your physician if you have special physical conditions such as injuries, heart conditions, asthma or recent surgeries and alter your program to fit your special needs. And remember, as with any other form of exercise, a complete medical checkup is advised before starting WaterGym.