This is unbearable. I'm dizzy, disorientated, a kilogram lighter and my legs are like lead. How hard will it be playing in 'dangerous' 40°C heat at the World Cup? I found out the hard way - now I know why experts think players won't even last a half

A journalist underwent a 50-minute exercise session in simulated World Cup conditions averaging 39.8°C heat and 46% humidity, emerging dizzy, disoriented, and a kilogram lighter with heavy legs. The experiment was designed to illustrate the extreme physical toll that players will face competing in approximately 40°C temperatures at the upcoming World Cup. Experts have raised concerns that players may not even be able to last a full half of football in such dangerous heat.