There are still a few exercises that I have to modify; for example, my wussy wrists protest push-up plyos done with my full weight, so I do them from my knees. And after the first day, I haven't attempted dropping down into a roll-back from a standing position because it re-triggered my chronic disc pain in my lower back. I'm hoping as my core strengthens that I will be more successful at lowering myself down, instead of slamming all my weight down on my L-4 and L-5.
I've had problems with frozen shoulder (first one, then the other--balance in all things, right?!) for the last couple years. I had done exercises to loosen them up, which did help, but I still had a limited range of motion. I thought I might need to cave and go for physical therapy this year, but after 3 weeks of P90X2, I've got more range of motion than I've had in years! Yea!
The workouts are becoming a better workout as I am more successful in doing more of the exercises. I was so awkward the first time through that when I finished, I was like, "That was it? That wasn't much." But even then I knew it was because I had missed so many of the repetitions and fumbled so many of the exercises.
Today I branched out with the X2 Total Body & X2 Ab Ripper DVD. More fumbling. More awkwardness. I've gotten better at doing push-ups the last few weeks, but today introduced the pull-up bar. Let's just say I need a lot of work. Good thing I still have a couple months left of my 90 days!