Among other things our pedantic mothers warned us about when playing around in a swimming pool, getting pruney fingers from staying in the water too long was one of them, as though having one's fingertips resemble tiny geriatric faces was a terminal disease. It's a common experience nearly every human being on the planet has shared and yet science has never quite determined the purpose of this wrinkly phenomenon -- until now. Once thought to have been the swelling of the outer layers of skin caused from extended submersion, a research team from the Institute of Neuroscience at Newcastle University has discovered that pruney digits are an evolutionary response of the nervous system which allows us to get a grip on wet surfaces.
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