The Winter Olympics has long been a battleground for marginal gains. Thursday, however, took things to a new level in Milan Cortina — ski jumpers allegedly injecting their penises with hyaluronic acid in order to fly that little bit further. So far, so lurid, but there is science behind the allegations. Temporarily enhanced measurements would theoretically mean athletes being given a bigger, looser suit and, like a sail catching wind, could allow them to make longer jumps. Research from the scientific journal, Frontiers, published last October said that a 2cm change in a suit represented an extra 5.8 meters in the length of a jump.