marquez, pacman or floyd. I know all are serious trainers, no surprise there. Freddy says manny's the hardest worker in boxing, obviously floyd works pretty hard too. Never heard about marquez's training, but I'm going to take a wild guess and say he's a worker.
Might as well throw hopkins and even calzaghe in the mix. How about Cotto as well. Heard all those guys are serious workers. Any clear winner in the bunch?
If he really trains from 3 to 5, that's 14 hours which is pretty much a full day. Hard to beat that. Wait...impossible to beat that. You positive he works in between?