World Cup 2026 kicks off in June across the United States, Mexico, and Canada. Stadium temperatures in Texas, California, and Mexico City can climb past 35 degrees Celsius. On the pitch it feels even hotter. Dark jerseys absorb heat. Artificial turf radiates warmth back at players' feet. The human body cools itself by sweating, but in extreme heat sweat cannot evaporate fast enough. Heart rate climbs. Reaction time slows. Sprints feel like running through soup. Coaches notice it first in the second half when pressing drops and mistakes rise. Heat does not just tire players. It changes the entire match. Teams from cooler climates struggle while squads used to tropical conditions thrive. Sports scientists measure core body temperature with ingestible pills or ear sensors. When a player hits danger zones, they must cool down or risk heat exhaustion. At a summer World Cup, the weather is not background noise. It is a tactical factor as real as the opposing striker.
⚡ DID YOU KNOW?
A footballer can lose two to three litres of sweat in a hot match. That is more than a large bottle of soda poured out of the body in ninety minutes.