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Is there anything better than coming home after a few hours out in the sunshine and having a little nap? A sweet siesta that you settle into as an afternoon treat. Lovely.

Why does warm weather make us so sleepy, though? And should we ever worry about it?

Well, the answer is surprisingly simple – but it does highlight the importance of sun safety.

Why hot weather makes you tired

Temperatures outside fluctuate, but our bodies need to keep a stable core temperature in order for our organs to function well, the BBC previously explained.

And unsurprisingly, that........

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