Welcome to ManSpank.us Personals! The Chemistry and Psychology of Spanking Think of some other bedroom antics that create pain: pulling hair, running nails down the back, biting, etc. They can hurt like hell (and often leave marks behind), so why do we savor the sensation? The answer is simple. When weâ€™re stressed or in pain, our brains release A LOT of chemicals: endorphin, serotonin, melatonin, epinephrine, norepinephrine, and dopamine. And not just physical pain but emotional and social discomfort as well - all for the purpose of re-balancing our bodies and trying to make us feel good again. One of the key players is dopamine, which is present in the body during pain AND pleasure. Many agree this might be one of the reasons we can combine pain and pleasure in a single situation. Itâ€™s like running until your muscles flip you the middle finger but reveling in the exercise â€œhighâ€. It hurts like hell, but, damn it, it feels good too! Another fun fact comes from Basic Orgasm 101â€¦ Sexual peaks are (in part) achieved when blood flow increases and collects in key hot spots or erogenous zones. The act of spanking can add another element of pleasure because the posterior is plentiful with nerves and right next door to the genitals. Strikes and slaps send waves and ripples through the skin and stimulate this fun area. There are also emotional and psychological aspects of pain and pleasure. Submission - giving up control to another person

- giving up control to another person Humiliation - a form of psychological pain

- a form of psychological pain Sexual objectification - the sexual value of the body as an object

- the sexual value of the body as an object Role-playing - participating in sexual fantasies