Or, if Roger Federer can stay in good shape for Wimbledon every year, why are so many top footballers missing crucial games because of torn adductor muscles, torn cruciate ligaments or mumps?Or, to put it another way, why havenÃ¢ÂÂt the hordes of sports scientists, nutritionists, fitness gurus, osteopaths and physiotherapists that advise the big clubs, dramatically reduced the level of injuries? In 2002, a UEFA study suggests 29% of the players in Japan/Korea incurred injuries. Others, like Beckham, were struggling for match fitness before the finals started.To take one extreme: a top flight English footballer in the 1980s was notorious for his 39-pint weekends, consumed in three major binges: Saturday night, Sunday lunchtime and Sunday night. As a result, he often missed Monday training and, making up for lost time on Tuesday, often pulled a muscle or three.Today that footballer would simply not be able to function. Yet the revolution in diet and fitness that has swept across English football has not made his successors much more robust. They may, in fact, be the unfittest professional athletes on the planet.If any club has come to epitomise the scientific approach to football in England, it is Arsene WengerÃ¢ÂÂs Arsenal.