P90X

So,my wife recently got us the P90X Workout system. I am currently on day 17, which means it is Shoulders and Triceps tonight. In 17 days, I'm not feeling the change I should be. (Mostly due to diet) I am working on it though and doing my best. As of now, I feel that I am so out of shape, that this might take two rounds of the program. I guess you can call it the P180X! hahaha.