Their preparation for England FIFA World Cup The Round of 16 meeting with Mexico has turned into a medical emergency, with reports suggesting that players have been given the option to use Viagra to help deal with the side effects of playing on the pitch. The tournament will be held at the Estadio Azteca in Mexico City, which is 7,350 feet (2,240 meters) above sea level. At that altitude, less oxygen is available, making it harder for athletes to exert themselves, recover between sprints and maintain their fitness levels. According to reports, the medical team in England has researched a number of ways to help players achieve their goals, and Viagra appears to be one of the most promising. Although this drug is best known for treating erectile dysfunction, it also works by dilating blood vessels, which can improve blood flow. Medical experts have been studying for a long time whether this can help athletes cope with the lack of oxygen they experience at high altitudes. The drug is not banned by the World Anti-Doping Agency (WADA), meaning that athletes are allowed to use it during and outside of competition. WADA has evaluated Viagra’s potential impact on athletic performance over the years due to its effect on blood flow. However, research has not produced conclusive evidence that it provides significant benefits for improving performance on land or near the sea. Its potential benefits are believed to be in high altitudes, where good circulation can help reduce some of the physical problems caused by low oxygen levels. For England, the use of any drugs should help the players adapt to the conditions in Mexico City rather than take advantage of the game. The challenge that awaits the Three Lions is huge. Mexico have built a good record at the Estadio Azteca, losing just two of their 89 matches at the famous venue. Their last defeat came in 2013, and they have taken the momentum into this World Cup by winning all four of their matches so far. England, in contrast, faced difficulties during the tournament. Their last 32 meeting against DR Congo was to be a dramatic comeback, with captain Harry Kane scoring twice late on to seal a 2-1 victory and secure a place in the last 16. Mexico won with a 2-0 win against Ecuador, setting up an interesting round of 16 competition in one of the most difficult places in the world, where England’s preparation included everything possible to overcome the special challenges that arise from the rise.