Originally Posted by tec68
I had no idea that this was so unbelievable. I am not trying to tell stories but I guess it sounds like I am.
Well, one of the reasons that it seems so unbelievable is that, unless we've misunderstood you, you said you lost a bunch of weight during that time. But to gain four inches on your arm you'd have to GAIN a BUNCH of weight.
And then the other thing is that P90X is endurance cardio, not strength training.