Can frequent masturbation desensitize the penis? I am 19 and have been masturbating, on average, once or twice a day since I hit puberty. While discussing the particulars of our sex life with my girlfriend, I started to fear that my excessive masturbation may have desensitized me. I do not have any problems becoming aroused or achieving orgasm, but compared with other sensitive parts of the body (my finger, for example), sensation in my penis feels less...precise, detailed? I don't know the right word. Could my masturbation have physically desensitized my penis, or is the physiology simply that the genital nerves have less specific sensation than, say, my finger?