âGlen Johnson and Bryan Ruiz will line up for their final Group D match at the World Cup with intimate knowledge of each otherâs DNA. The pair, who are set to play for England and Costa Rica in Brazil, have become the first footballers to undergo a revolutionary genetic examination and reveal the results. British company DNAFit Life Sciences have devised a series of tests to measure athletesâ physical capabilities and devise bespoke training regimes. Johnson was found to have a good balance between power and endurance, as well as genes associated with fast-twitch muscle fibres that aid bursts of speed and jumping. His aerobic potential was measured as very high but he was found to need a diet low in refined carbs like white bread and potatoes. Dr Keith Grimaldi, who developed the test, said the results showed Johnson âhas the perfect genetic make-up for a defenderâ. Ruiz was found to have quick recovery time from exercise, so perhaps he will be the fresher of the pair after two games come June 24.â Source: http://www.dailymail.co.uk/sport/wo...clash-World-Cup-DNA-battle.html#ixzz336v1VZyZ Well there you go. Unless thereâs more that theyâre not telling us about.