England fans have turned their attention to Mexico after the Three Lions reached the last 16 of the World Cup, thanks to two late goals from Harry Kane.
The side will face Mexico at Estadio Azteca, which sits more than 7,300ft above sea level, at 1am BST on Monday.
At Estadio Azteca's height, oxygen intake can fall by more than 7% until the body has time to acclimatise.
That can reduce stamina and make it harder for players to sprint or press for long periods.
So, how are the squad hoping to overcome the altitude?
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