Orgasm as pain killer

 

http://www.huffingtonpost.com/2013/08/09/science-world-orgasm-ad_n_3733133.html?utm_hp_ref=science

“Beverly Whipple, co-author of The Science of Orgasm, told LifeScript that orgasms increase pain thresholds by more than 108 percent. In experiments on rats, orgasms produced a pain-killing effect equal to "10 milligrams of morphine per kilogram of body weight," she said.

The climax triggers a surge of the hormone called oxytocin, which acts as a positive neurotransmitter to the brain, Woman's Day reports. The pain-easing effect lasts for about 10 minutes.”