Muscular young men are likely to have more sex partners than their less-chiseled peers, researchers at the University of California Los Angeles said on Monday.
Their study, published in the Personality and Social Psychology Bulletin, suggests muscles in men are akin to elaborate tail feathers in male peacocks: They attract females looking for a virile mate.
"Women are predisposed to prefer muscularity in men," said study author David Frederick of UCLA.
"Most research is focused on what men find physically attractive in women and the career traits women find attractive in men," Frederick said by telephone. "Much less research is devoted to what women find attractive."
Next week's research will no doubt focus on whether water is wet.
Sheesh, any random geneticist could have told you this.