What does hot weather do to the body?

This article explains the physiological effects of heatwaves on the human body, including how blood pressure drops and heart strain increases. It also provides health advice from the UK Health Security Agency on how to stay safe during extreme temperatures.
Why it matters
As global temperatures rise, understanding the biological risks of heat exposure is essential for public health and safety.
What do heatwaves do to the body and who is most at risk?
The content is purely informational and based on scientific and public health guidelines.
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