i don't really understand the logic behind the 2 and 3 hour workouts, but I go for about 50min. Definately no more than one hour. When I cut, cardio is separated from weights as much as possible. Normally cardio is in the morn, and weights are evening. But seriously, why???? Two and three hours??? Can you say severe catabolism, and cortisol. Its like taking a butcher knife to your muscles. Im not huge, but I am fairly experienced for my age. I guess it all depends on your goals. Maybe for powerlifters or something that don't really give a shit what they look like.