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Extreme heat in the US has affected many games during the Club World Cup, with Borussia Dortmund manager Niko Kovac saying he was “sweating like I’ve just come out of a sauna” during his side’s group win over Mamelodi Sundowns in Cincinnati, Ohio.<\/p>\n
The temperature reached 36C during Benfica’s group win over Bayern Munich in Charlotte, North Carolina, while Chelsea manager Enzo Maresca said it was “impossible” to organise normal training sessions amid a “code red” severe heat warning in Philadelphia.<\/p>\n
‘Cooling breaks’ are mandatory once certain conditions are reached and they have been implemented in 33 out of 56 matches.<\/p>\n
Fifa guidelines currently rely on the wet bulb globe temperature (WBGT), a measure of heat stress combining temperature and humidity.<\/p>\n
If the WBGT exceeds 32C, cooling breaks are mandatory in both halves of a match.<\/p>\n
Global players’ union Fifpro has said breaks should be introduced once the WBGT goes above 28C, and matches should be delayed if it exceeds 32C.<\/p>\n
The US will host next year’s World Cup.<\/p>\n
A leading specialist on the effects of extreme temperature on the human body told BBC Sport<\/a> this week that Fifa should consider starting the final at 9am local time should there be similar conditions to those at the Club World Cup.<\/p>\n<\/div>\n