okay, so your muscles grow outside of the gym, so you want to rest to maximize growth. does this growth occur at a relatively stable rate for a couple of days after leaving the gym, or does a lot of the growth occur rapidly, in the first day or two? i ask because the way i'm training now is upper half days and lower half days, and was thinking i could handle getting to at least 4 days, maybe 5 days, working out per week. when i lift i go about 45 minutes, and heavy, compound movements, so that would mean 2 or 3 days of squatting /deadlifting weekly, which is definitely a lot. if i am 21, get proper rest, and great nutrition / supplementation, and am not showing signs of overtraining, would doing such short rest periods give me better growth since i'm in the gym more?