Drinking hot tea in summer really does cool you down – here’s the science

This week, temperatures across the UK are soaring, with those of us in London expecting temperatures of up to 40°C.

While you might be tempted to reach for a cold drink to help cool you down, surprisingly hot drinks such as teas and coffees may actually be more effective.

A study in 2012 by researchers from the University of Ottawa looked at the effect of drinking hot drinks on body temperature.

The results revealed that a hot drink can cool you down, but only in dry conditions.

Speaking to the Smithsonian Mag , Dr Ollie Jay, one of the authors of the study, explained: “If you drink a hot drink, it does result in a lower amount of heat stored inside your body, provided the additional sweat that’s produced when you drink the hot drink can evaporate.”

Essentially, when you ingest a hot drink, you start sweating more. If the sweat is able evaporate, it actually cools you down, more than compensating for the added heat to the body from the fluid.

While sweating can be embarrassing, it’s an essential body function to help keep us cool.

As the sweat evaporates from the surface of your skin, it removes excess heat by converting the water from a liquid to a vapour.


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