Originally Posted by
CDu
It depends. In a good 2-3 zone, the two “forwards” (the outer two of the “3”) move easily as much as as the two up top. It is only in a lazy zone (where the forwards aren’t actively supporting out to the 3pt line) that the guards do all the work. Which is, of course, the case in your average rec league.
But in practice, the strong side forward should be as active as the strong side guard, and the weakside forward as active as the weakside guard. Only the center has a limited range of responsibility, generally from block to block and maybe up to the free throw line.
I would also say that man to man - if well organized - is as taxing as a well-organized zone. It requires constant communication and movement, even if you are off the ball. Man to man is only really easier physically at the pickup/rec level, and really only easier for the guards. For the forwards and centers, they probably find the zone easier physically. But that is more a statement about the quality of the defense being played and the cohesion of the offense being faced.