Extreme heat has significantly impacted the 2026 World Cup, prompting FIFA to implement mandatory three-minute hydration breaks during every match near the 22nd and 67th minutes. Initially introduced as a player welfare measure to help athletes cope with North American heat, these breaks have also created new tactical opportunities for coaches and advertising slots for broadcasters. Fox reportedly generated hundreds of millions in ad revenue from hydration break commercials, highlighting how the policy is influencing soccer media-rights discussions moving forward.

Despite the intention behind these breaks, they have drawn criticism from players and coaches, particularly in matches held in cooler or climate-controlled stadiums where the breaks may seem unnecessary. The challenge is amplified by extreme temperature variability, with some group-stage games experiencing temperatures around or above 90 degrees Fahrenheit. The global players’ union FIFPRO recommends cooling breaks when temperatures exceed 86 degrees and suggests postponing play if it surpasses 97 degrees. Matches like France-Paraguay in Philadelphia, where it approached 100 degrees, have tested these limits.

Beyond physical fatigue, neuroscientist Ramses Alcaide explained that heat and dehydration can undercut players’ cognitive functions, affecting focus, decision-making, and vision. As the brain generates significant heat during high-intensity activity, overheating and dehydration can cause mental lapses such as poor passes or missed defensive coverage. Alcaide stressed that these cognitive declines can start as early as 30 minutes into a match, emphasizing the importance of hydration breaks for both physical and brain recovery, which ultimately enhances gameplay quality.

The 2026 World Cup has exposed teams to vastly different environmental conditions depending on their venues. For example, France has endured outdoor matches in intense heat, whereas Spain has benefited from playing mostly in climate-controlled stadiums. While Alcaide advocates for protecting players against heat-related risks, he also cautions against drastically altering the traditional outdoor soccer experience. The evolution of hydration breaks symbolizes the balance between maintaining the sport’s authenticity and addressing emerging health challenges in a warming climate.