jengollf
Cathlete
I did X10 for the first time this morning. I did the X77 premix because I wanted to sample them all. All I can say is WOW. That is the hardest cardio I have ever done--I think it beats Insanity. At least Insanity gave me 30 second breaks. I was wasted by the end of X77 and several times considered quitting and coming back to X10 using the shorter premixes. Which btw, is my future plan. Because I found just doing 2, 3 or 4 back to back sufficiently challenging! I will not be doing X77 again any time soon. However, I LOVE this workout and the varieties I now have b4 me. It is the 5th of the new workouts that I have tried so far (I've done Flex Train, Lean Legs and Abs, Great Glutes and Rockout Knockout) and it is my favorite and the most challenging of the 5 I've done.