The Crossfit protocol
My Platoon Sergeant is a fucking monster and this cross fit shit tears him a new asshole daily. If it crushes him, it has to be badass. As for 90% of my platoon? We are the bastard children of Satan, and most of us cry like bitches trying to do this shit to standard. I have seen good results on it, but as for APFT? Training for a PT Test versus training for combat fitness are far different as demonstrated over the last couple of years worht of deployments. So its on you, but I would tend to balance my work out sessions with a piss load more running than crossfit implicates. Just my .02 cents.