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					Originally Posted by  Tripp
					 
				 
				The soreness going away is a result of both your body being used to being so active, and the increased protein intake.  If you're trying to gain muscle mass, I would raise your protein intake a bit, by taking a shake about 30 mins before you start your workout as well. 
 
I used P90x for a few months, and it helped me get into better shape, but the workouts weren't really for me, since they really focus more on endurance than intensity.  As a result I've started doing customized workouts, and have been getting much better results.  Though I still use Interval X from p90x+ for my cardio. 
			
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 Only problem I see with that is these shakes I calculated out to being about 20 carbs a piece.
I may start doing this on phase 2, but for now I think it might be a bit overkill.