Some train the same body parts twice a week or add in more sets to each part because when your "on" you can recover ALOT faster as opposed to when your off a cycle. All depends on the person and what works best for them
I tend to work each body part once per week, and don't seem to recover any faster when "on." I realize I actually am recovering quicker, but the lactic acid buildup is the same, and the soreness remains regardless of whether I'm on or off.