My gods, give me shivers thinking about it. I have had accidental minute scrape while doing some jelq pumps and blood would drip out from the smallest micro nick. I could not see the cut it was sooo small like a pin hole nick. It scared me alot the first time. But it healed same day, and I started pe up again the next day no problem. I always get some micro blood blisters if I don't warm up gradualy.