That was the stark warning from Russian tennis player Daniil Medvedev as he battled the heat, humidity and Andrey Rublev at the US Open in New York last week. It came just a week after some races at the World Athletics Championships in Budapest were moved because of fears over the safety of competitors. external-link
With extreme temperatures more likely across the globe as a result of climate change, these kind of impacts are becoming the new reality for sport.
In less than three years' time, the 2026 men's World Cup final will cap an expanded tournament of 48 teams playing 104 matches in six summer weeks across Canada, the United States and Mexico.
The previous edition - held in Qatar in 2022 - was moved from June and July, when temperatures regularly exceed 40C and can reach 50C, to November and December to protect players and fans.
But after a record-breaking summer of extreme heat and wildfire air pollution - in which 96% of the US population (318 million people) experienced an extreme heat alert, 175 cities had at least a week of extreme heat, and 45 cities witnessed unusually high temperatures for more than half of their summer days - could Fifa have another issue on its hands?