I don't really know.....
But, in high school (I know lololol) our wresting coach made us run until some of us threw up or just quit from exhaustion, then did weights, then spared, then ran again...
I hated it, I would sit in the class room and just count down the hours till practice, because I knew it would be hell.
I hated it with passion.
We were also State Champs 3/4 years.
But, I think they got most of their conditioning was done in the summer, so now it's just slowing down, fine tuning little things, and getting the plays perfect. Which would seem fun, and they play good music on the speakers.