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This article feels like a bait-and-switch. Why isn't it two articles - one on the benefits of exercise and one on US foreign aid policy?

At a minimum, I don't feel the HN post title properly reflects the full contents of the article.

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Worse, it never even attempts to answer the question the title poses. It gives some recent evidence that exercise is good for you, and then goes off on a topic so unrelated it can’t even be called a tangent.

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