It's been really great! In conjunction with taking your supplements and eliminating some of my personal bad habits in less than a month I've already seen results. I was training to run up a mountain and after starting your products and following advice from your book I was able to achieve the time from base to summit that I was shooting for and now I need to find a taller mountain! I swim long distances in lakes and my total body endurance is much much higher now too. Overall I feel like I'm much more on my front foot so to speak, thank you! I'm going to need some more Testro-X soon!