Grows fastest I would say legs. Next to that everything else. Slowest are biceps and forearms but everthing is still pretty much in proportion on my physique. Im pretty balanced. Especially when im really lean.
My little man down there----Short and limp to long and hard in a few seconds!!! Its like magic-- And 1000mg of test seems to help it grow faster and harder!!!
My legs grow the fastest. I am about to start a cycle and I dont plan on dong much with legs. I will use cardio and some light leg work just to tone them. I need to bring the rest of my body in proportion with them damn tree trunks of mine.