Few British men would claim to match Sting's legendary boast that, as a master of 'Tantric sex', he could make love to his wife for seven hours at a time. But at an average of seven minutes and 36 seconds, they still last significantly longer than their international rivals, it was claimed yesterday. By comparison the typical American lasts seven minutes, the average Spaniard just under six minutes and most Dutchmen slightly over five minutes. As for the Turks, they can manage only just over three and a half minutes before it's all over. The five-nation study, by a team...