The idea that fresh air and outdoor play are crucial to good health is so prevalent that it has even found some unlikely champions in the pharmaceutical industry. Kronans Apotek, one of the largest pharmacy chains in Sweden, offers the following advice for flu season on its website: “The first step toward fewer runny noses and less coughing is to let the child spend as much time outside as possible,” the company says. “When children are outside, the physical distance between them increases, which reduces the risk for contagion through direct contact or the air. The more time spent outside the
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