Changed my Insanity routine

I changed some of the specifics of my Insanity routine (plyometric cardio circuit) on my cardio days. The second set contains pushups with running in place while in the plank position. Because I don't want to work my chest twice within the same week I substitute that sequence with burpees while they are doing the pushup and running sequence, I then follow along on the ski abs and the in & out abs. It gives my chest more of a recovery time and the burpees add more of a cardio/endurance/stamina factor than a strength factor, which is what I want on my cardio days.