There is growing evidence that oxytocin, a hormone released during sex and orgasm, may promote faithfulness. A 2012 study found that men in committed relationships who were dosed with oxytocin kept farther distances from attractive women during their first encounter than those who were single.
Credit: Andreas Pollok / Getty Images
Powered By ZergNet
Action-Packed Summer Trips
Race Dune Buggies, Explore Italy, Bike Yellowstone
Plus: Fighting Poachers and Oil Companies in Congo
ON NEWSSTANDS NOW
Nick Offerman's Life Advice
Sign up to receive the Men’s Journal newsletter and special offers from MJ and its marketing partners.