Real, non-rhetorical question: why do humans poke & grope at the spots on their bodies where they are experiencing physical pain?
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Replying to @gesa
@gesa I’m not sure if we know why but there is at least evidence that there is a real effect http://www.cell.com/current-biology/abstract/S0960-9822%2810%2901060-2 …1 reply 0 retweets 0 likes
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