Re: 3 months of training 1 week of rest?
I never go a full week, 5 days max (unless i get a particularly nasty strain of sick that has me floored for longer than that). It's a way to keep the body from adapting (plateau), and allowing for some solid recovery time so the muscles can do all the repairs they need. Often after the break you actually become stronger and have renewed "vigor" in the gym. It's a good plan.
Keep your body lean, your blood clean and your mind sharp. -Rollins