Your arousal response is your body’s natural mechanism for accessing pleasure. Although often confused with the genital swelling that accompanies being turned on, the source and ignition for becoming aroused lives in the sexiest organ of your body—your brain. More specifically in the limbic area of the brain, which is also responsible for generating our emotions and developing memory. Conveniently the limbic brain is co-located with our olfactory bulb, which explains why our sense of smell both heightens our emotional experience and connects us to our memories so powerfully.