http://www.fitnessdestinations.com – One of the biggest reasons people don’t get results with P90X is because they don’t follow the directions, and they do the workouts in the wrong order. You can modify the order of the P90X workouts, but you have to do it the right way, and this video explains how to do that.
Whenever possible, however, stick to the P90X schedule exactly. The workouts are in the order they are in for a reason.