- Having gone through my own transformation and losing a considerable amount of weight I decided in my late 50s to help others. I am certified for group fitness instruction through ACE, Pound through PoundFit, and Yoga through SCW. At 61 years young I teach a variety of classes from strength to HIIT to Aquafit, and Pound at several locations for two national gym chains. I am currently developing online/virtual classes for all of the modalities I am certified for. I have worked with ages from teens to seniors in group fitness classes and can adjust moves according to ability.