I purchased GMB Mobility with the hope that it would provide a way to improve my flexibility and mobility on days I wasn't training with kettlebells. I'm over halfway through the program at this point and it has been exactly what I had hoped... and more. I am finding squat and hamstring mobility greatly improved and my wife has commented on the fact that I just seem to move better. In addition, it's really, really fun. Although clearly based on a scientific approach of stretching and then owning the new range of motion through action, the sessions and animal movements are also quite playful. I've found the playfulness to be a nice contrast to my more structured kettlebell training. The sessions also work well as a way to train in a hotel room while on the road and I find myself doing some of these moves throughout my day. I'm super happy with this purchase and decided to sign up for an in-person seminar to learn more. Looking forward to that!