Science video explains why our fingers and toes form a whole lot of wrinkles when we swim or take a long bath

May 13, 2015 14:51 GMT  ·  By

We're going to go out on a limb here and assume you've gone swimming or taken a bath at least once in your life. Hence, you're probably all too familiar with what happens to toes and fingers when kept in the water for too long. 

Long story short, they form a whole lot of wrinkles and start looking, well, kind of nasty. In case you've ever wondered why this happens, here's a science video explaining how and why water makes our extremities wrinkle.

For quite a while, scientists were convinced that these wrinkles on our toes and fingers were the result of water working its way into the outer layer of our skin. However, this theory was proven wrong a few decades back, in 1935.

As it turns out, wrinkly toes and fingers are an active response of the nervous system to prolonged exposure to water. Otherwise put, our body knowingly and willingly makes our skin curl up when we spend too much time submerged.

These days, it is believed that we humans evolved to respond to moisture in this manner because having wrinkly toes and fingers made it easier for our ancestors to explore lakes and rivers and grab hold of things underwater.