To address the original question, judging from �naked people movies� alone, I would have to say that blacks have the biggest penises, even if not all of them are that way. On average, it probably goes blacks, whites, then asians (sorry, but I've never seen a large asian cock, and some pretty damn small ones in �naked people movies�). I think I saw somewhere that blacks were roughly 7" on average, while whites and asians were respectively 6" and 5" for length. I don't know where latinos fit into those figures.
Sorry if this is a tangent, but it isn't as easy as saying that we want to delay the healing process as much as possible. You simply want the tissues to heal in an enlarged state, ie semi-erect or stretched. If you are basing that comment on the fact that you want to keep fatigue going as long as possible, you are assuming that enlargement is based entirely on stretching cells to a larger volume. Research on
traction shows that growth also is attributed to cell division, which is a form of healing. If you delay or inhibit mitosis, you will limit gains. The comprimise between both forms of growth (hypertrophy and hyperplasia) is to fatigue the penis with high tension, then keep the penis extended/expanded for as long as possible, even if it is only at low tension. Over the past five weeks, I've followed that regiment and gained 1/4".