Well i don't train anything one too three times, I train with the idea of day one day two day three... etc. Just like meal one meal two meal three... you know. It's how many day's you have rest since you last hit the samebody part that counts more.
I train my body in 5 days, then rest, then start the session again, with differend intensity.
Anyway, I would still recommend 2 times a week, there's no rules for this.
2 times a week is not over training to me, unless I under eat.
Most guys in my gym allways comes to me; "yeah man I had one week rest Don't know why my chest day is going so badly, well at least I haven't overtrained I have rested good".
Too much rest is worse than too little rest. At too little rest you just change the volume of your training, but when you are under trained you have to kinda start from the beginnign.
*waiting igorely bbdude's response on how to reply properly to this matter*
