The Guardian theguardian.com 2026-06-28 13:00

Do you need electrolytes? Will tea cool you down? Is it safe to drink beer? How to stay hydrated in a heatwave

The hotter it gets, the faster our bodies lose water. Obviously, we need to replace it – but is anything better than plain H₂O? And does timing matter? Here’s what the science saysHydration is important. In temperatures like those we’re increasingly seeing in much of the world, s

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