The girl used in this video is one that could have been pulled off the street in most of the exercises. Please, if you waste your money on this app, do NOT imitate how she does the exercises, especially with push ups and squats. The way she does them will lead to injuries. Second, they dont even have her doing the exercises all the way through, but instead have a short clip that gets repeated for the time period. Another example of her being someone pulled off the street. She only had to each exercise for one rep. This is not a very motivating factor when even those selling the fitness wont put out the effort themselves. Overall, Im sad I wasted my money. I got this to do as a warm up to my main exercises, and now Im wishing I just stuck with doing it on my own.