The Atlantic

Drink More Water

The dos and don’ts of hydrating in a heat wave
Source: Illustration by The Atlantic. Sources: Getty.

The heat—miserable and oppressive—is not abating. Today, a third of Americans are under a heat alert as temperatures keep breaking records: Phoenix has hit 110 degrees Fahrenheit for two weeks straight, while this weekend Death Valley in California could surpass the all-time high of 130 degrees.

Even less extreme heat than that can be dangerous. Recently, in Texas, Louisiana, part of Arizona, and Florida, there have been reports of deaths from heat, and many more hospitalizations. The toll of a heat wave is not always clear in the moment: A new report suggests that last summer’s historic heat wave in Europe killed more than 60,000 people.

Ideally, you’d stay in the air-conditioned indoors as much as possible. That’s not an option for everyone. The other thing

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