Boo Dog is one of the best of our current fighters. His grappling, kicking, and MMA skills are of a very high level too. ((He regularly can hit people in a DB Stickfight with a backhand-spinning heel hook kick combo btw). He spars regular with UFC fighter Manny Gamburian. As you would expect, he is very athletically fit and recently I have started his push up routine. It is very simple. Throughout the day, do many moderate rep sets. Thus if one does ten sets of 10 during the day, that was a 100 rep day. Do ten more the next day. The idea is to do it six days a week, increasing in reps every day. Over not too long one should be doing some fairly impressive numbers e.g. in four months one should be doing over 1,000 PUs per day. Boo likes during the bottom half of the motion in order to focus on the chest. He currently is north of 1,400 reps a day. OTOH I am well below that though in defense of my ego I hasten to add that I prefer full reps.