Warning: This video is not safe for work. Or home. Or the bus. Or prison. Basically, it’s completely obscene – but since it counts as science, we’re going to show it.
A couple of participants had cameras attached to all of their saucy parts and jiggly bits, and then were filmed having sexual intercourse in the missionary position. Via a tiny lens placed inside the vagina itself, viewers can get a close-up of the penis as it enters, stimulating the clitoris and the front vaginal wall, where the G-spot is located.
Further cameras placed on the woman’s nipple and the man's penis provide different perspectives on the effects of sex on the body, which, unsurprisingly, tends to get rather excited before making a mess all over the camera, thus bringing the scientific experiment to a close.
While all this is going on, the woman may experience an orgasm of her own, which announces itself in a number of ways, including muscular contractions and a sensation of being able to feel one’s own heartbeat in the vagina. This happens as a result of direct stimulation of the clitoris, which, as viewers can see, is one of the missionary position’s big selling points.
Both the clitoris and the glans (the head of the penis) contain a high number of nerve endings, which send sensory information to the brain when they become stimulated, resulting in the release of large amounts of dopamine and oxytocin. These are responsible for the feelings of pleasure and intimacy that accompany orgasms.
So, now you know.