Why you struggle to think clearly during a heatwave (opens original article in a new tab)

Heatwaves can impair cognitive functions by redirecting blood flow to cool the body, leading to brain fog, poor focus, and memory issues, with recommendations to stay hydrated and adjust routines.

• High temperatures during heatwaves impair cognitive functions like attention, decision-making, and memory
• The brain's hypothalamus redirects blood flow to the skin for cooling, reducing resources for cognitive processes
• Dehydration and disrupted sleep further exacerbate cognitive challenges during heatwaves
• Experts recommend staying hydrated, adjusting schedules, and creating cooler environments to mitigate heat-related brain fog
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