My husband and I were out of shape runners when we joined the Paradise Valley OTF during their 6 week weight loss challenge in Sept. I found that their classes push and motivate you to try your hardest just like a personal trainer, but without the expense. I saw a review that said "too expensive"...not true. It's a fraction of what you'd spend on a trainer but with the same efficacy. During the weight loss challenge their trainers and staff actually looked at our food logs, gave us input and ideas on how to clean up our diets. I thought we were pretty healthy eaters already but now I will never change these new healthier dietary habits. In 6 weeks, I lost 13lb and my husband lost 20lb by improving our diet and going there 3 times a week. I was an average speed runner but have become faster after my 6 weeks there. Their trainers are very friendly and everyone tries to greet you by name. The environment is not intimidating. There are many people there in amazing shape but a few of us who are not and it's not intimidating. I can't say enough positive things about OTF.