I have and actually I was the first fitness deal Groupon ever had. I was very happy with that deal and it gave me the opportunity to expose my business to many new potential clients in ways I could have not done it myself. I had just started my company, so that good timing for me. Groupon it’s a great way for a trainer or any business to promote their services to a larger and diverse population. It shouldn’t be the only way of marketing done by trainers to get promoted, but it’s one that it costs no money and can get a lot of traffic thru the front door. Only thing to remember is to know the limits of how many grouponers you can handle, because it may backfire if you are not prepared to handle the volume of potential new customers.