I thought I did pretty well with 24 until my 22 year old son finished 29 rounds. This was the first time he tried Simplefit. However, I will say that he has been doing somewhat of a Simplefit routine for a while now. In fact, the Iron Gym pullup bar we use is his that he has been using for several months.
His main problem was the squats, since he focused primarily on pullups and pushups.
Still, I am happy with 24 rounds. One thing I noticed today was the soreness in my deltoids. I have never really felt that from doing chest work, so it must be all the reps. I hope I can finish D3 in 5 minutes. It's going to be tough!