Originally Posted by ehubbard
I think that all depends on how close you approach true maxes in the gym. If you have a bunch of PR's that are very close to your true max then you are not going to make as much "progress" as you would if you always leave something in the tank.
^^That's it in a nut shell^^
The intensity takes it toll after a while and your body needs a break. Some are very good at auto-regulating the intensity, others need to program it in.