Water-Logged 'Prune' Fingers Grip Better, New Theory Suggests

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Theory suggests wrinkling of wet digits evolved for a reason.

The wrinkles that develop on wet fingers could be an adaptation to give us better grip in slippery conditions, the latest theory suggests.



Scientists know a lot about the body, but they don't know everything. Take, for example, the pruning that occurs when you spend too much time in the water. Scientists don't know why these wrinkles occur only on the hands and feet.

A recent study in Brain, Behavior and Evolution suggests these wrinkles are there for a reason - they may help you grip things. The wrinkles all have the same basic pattern of grooves that move apart from each other as they extend away from the fingertips. These grooves let water drain from your hands and could provide additional surface area to improve your grip in wet conditions.

[ Brain, Behavior and Evolution via NYT via Gizmodo]

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