Webmore than 100m people are under extreme heat advisories this thursday, spanning across the southern us states, as the country grapples with what is projected.

Webthe effects of scorching temperatures are exacerbated in cities, where buildings and roads soak up warmth.

With heatstroke, your core body temperature can rise quickly to 103 to 105 degrees or more, says gandhi.

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Webyou really want to avoid heatstroke:

Webspending time outside in scorching weather can put you at risk of heat stroke or exhaustion.

Here's what to watch out for and how to stay safe.

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