Too hot to think? Why extreme heat can affect how well our brain works

By Dan Baumgardt, Senior Lecturer, School of Psychology and Neuroscience, University of Bristol

Ever feel that the arrival of summer sun makes you feel a bit dopey? You wouldn’t be the only one. Soaring temperatures are known for their ability to slow our thought processes, making even everyday tasks seem like a baffling ordeal.

But what is actually happening inside our heads when the heat is on? The explanation appears to lie in the extra work our brain and body have to do to keep us cool.

The brain and body are in constant conversation. When outdoor temperatures change,…

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