After a weekend of fast food and late nights at a friend's wedding I am back on track. I have started month 2 round 2 of P-90X and have shaken things up a bit by using medicine balls and suspension straps for balance during the body weight exercises and a balance ball for some of the seated and ab moves. Doing this I can only make it through about half the workout before my body can't take any more. Then I plan on running for the other half. Plateau? What's that?