Exercising in high temperatures can lead to unsustainable heat generation and increased risk of exertional heat illness (EHI),1 including heat exhaustion (core temperature (Tc) between 38.5°C and 40°C) and heat stroke (Tc > 40°C). Despite warnings from the International Olympic Committee (IOC) about rising temperatures due to global warming, evidence-based mitigation strategies in sports remain insufficient. This infographic for tennis players performing at high intensity in extreme heat highlights how to recognise and protect against EHI.
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