When did you last have a decent drink of water? We all know we should down more H₂O, yet the average Briton sips less than half the recommended six to eight glasses a day , shows recent research by PureGym. This doesn’t just leave us feeling parched, it can put us at risk of dehydration and long-term health issues.

“ Water is essential for life and plays a vital role in nearly every body process,” says Stavros A. Kavouras, a professor of nutrition and director of the Hydration Science Lab at Arizona State University. “It helps regulate your temperature, transport nutrients, remove waste and lubricate your joints. Proper hydration aids digestion, supports kidney and heart health, and enhances physical performance.”

The human body is around 60 per cent water, but we constantly lose flu

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