It’s a bit more than a strong wind, it’s the Delta-pressure (rapid rise/fall in pressure) that is the danger, it’s more like a punch. Humans are squishy. The shockwave travels through your body too, squishing and expanding your internal organs. If you’ve seen a slow-mo video of someone getting punched/slapped in the face, the skin flubbers out everywhere. And an explosion is a STRONG punch.
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