Breathing becomes a struggle, legs feel heavy, and even the fittest players find themselves gasping for air — that is the reality of competing at altitude, and it is precisely what England will encounter when they face Mexico at the Estadio Azteca, situated 2,240 metres above sea level.

BBC Sport pundits Rachel Corsie and Lucas Leiva have both experienced high-altitude football first hand, and their accounts paint a vivid picture of the physical toll it takes on players. "You can't breathe," is how the sensation has been described — a blunt warning to any team unprepared for the conditions.

The Estadio Azteca, one of football's most iconic venues, poses a unique challenge beyond its storied history and raucous atmosphere. At over 2,000 metres above sea level, the thin air dramatically reduces the amount of oxygen available to players, forcing the body to work harder with every sprint, tackle, and clearance.

Corsie and Leiva explained that acclimatisation is essential — arriving early and training at altitude in the days before a match can make a meaningful difference, though the human body never fully adapts in a short window. Recovery times lengthen, cramp becomes more common, and even walking up stairs in the stadium can leave players breathless before kick-off.

For England, the fixture against Mexico at the FIFA World Cup 2026 represents one of the tournament's most demanding physical tests. Mexico, who are accustomed to playing at altitude given their domestic football environment, will carry a natural advantage — a factor that England's coaching staff will be well aware of as they plan their preparation.

The altitude factor has long shaped football history at the Estadio Azteca, and at the FIFA World Cup 2026, it promises to play a defining role once again.