Patents, as I recall from a friend who worked in this field, can not be taken for a process that is done entirely with just the human body. I suspect what you want is trademarking, but Harris is right… even a fitness pro who has engaged in this arena will not be able to give you better advice than will a legal professional….. if you have some intellectual property you want to assert rights over you are best to speak to a professional. They can not just tell you how to do it but how to do it in a way that will best preserve your rights.
The question then becomes what you want to do with the rights…. you might also want a strategy for how you want to market your product and to explore how widespread interest is likely to be in it.