Distance running may be more than just a sport or hobby for men when it comes to mating. Distance runners have higher levels of testosterone and genetic leverage over their male competitors, according to a new study published in the journal PLOS ONE. Researchers from the University of Cambridge’s Division of Biological Anthropology measured half-marathon runners’ finger length as a marker for hormone exposure in the womb.
To provide a little background, a recent study found the smaller the ratio is between a man’s pointer finger and his ring finger, the less testosterone he was exposed to while in utero. Previous research has found pre-birth hormone exposure has been shown to increase sex drive, sperm count, cardiovascular efficiency, and spatial awareness. Babies who were exposed to higher levels may have also been born with an advantage on the track. Knowing this, researchers analyzed 542