Finished the 3rd week, ready for that sweet, sweet day off tomorrow. My ankles definitely need a break.
Speaking of which, if you are overweight and/or not even remotely fit, this program is not advisable, but that did not stop me or the OP, so if you are going to do this anyway, go easy on the jumping and side to side stuff or you may hurt your ankles and knees.
One thing I do is when I take the inevitable unscheduled break(s), I'll often do them during those types of exercises, but you shouldn't completely skip them because jumping and running to the side is a big bang for the buck exercise, burning more calories than most of the workout. Also, sometimes if I know my ankle or knee is tweaked before I start that workout, I might do all the exercises (as long as I can, anyway) for the first circuit, then I might substitute power squats or sprints for the problematic exercises in the 2nd and 3rd circuits (assuming I'm not gassed and resting through them)
<ptp> how many emo kids does it take to change a lightbulb?
<Willy> HOW MANY?!
<ptp> none they just sit in the dark and cry