India, July 4 -- England's preparations for their FIFA World Cup Round of 16 showdown against Mexico have taken an unusual turn, with reports suggesting players have been given the option to use viagra to help counter the effects of high altitude ahead of the clash at the iconic Azteca Stadium. The knockout fixture will be played in Mexico City, which sits at an elevation of approximately 7,350 feet above sea level. At such elevations, the thinner air can reduce oxygen intake, affecting endurance, recovery and overall physical performance, particularly for teams not accustomed to playing in those conditions.

England's medical staff are understood to have explored a range of methods to minimise the impact of altitude, with viagra emerging...