The Weird Reason Your Nipples Go Hard – Even When You're Not Cold ...

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The weird reason your nipples go hard – even when you're not cold or excited

Our nipples have a mind of their own

CommentsNewsJoshua Barrie18:05, 19 Sep 2016Updated 19:12, 19 Sep 2016

Nipples cannot be controlled(Image: Getty)

Nipples.

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Sometimes they're hard, sometimes they're not. Whatever they are, it seems we have absolutely no control over them.

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The science behind our nipples responding to cold environments is well-known – our skin tightens and contracts during chilly weather, causing them to shrink and harden.

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It's to reduce the surface area of the nipple , and therefore decrease the amount of energy required to keep it warm.

And sure, we also appreciate nipples' function in sexual activity. They react in the same way as other parts of the body . Let's leave it at that.

But a new study has found that nipples sometimes go hard for no reason whatsoever.

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They have a mind of their own.

Gwyneth Paltrow(Image: Reuters)

"Why are my nipples hard," you may ask? "All I'm doing is watching EastEnders ."

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Researchers at the Karolinska Institutet in Sweden have found that nipples have their very own "special nerve" that causes goose bumps and nipple erection.

The study, published in Science Daily , explains: "The sympathetic nerve system has long been thought to respond the same regardless of the physical or emotional stimulus triggering it.

"However, in a new study, scientists show that the system comprises different neurons that regulate specific physiological functions, such as erectile muscle control."

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Batman has prominent nipples(Image: REX)

Basically, even when we're not aroused, our nervous system functions involuntarily – and without "conscious control".

We've got little nipple neurons with minds of their own – running along with all the other things are bodies do automatically, like digesting food, maintaining body temperature, and pumping blood around.

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The neurons are connected to this nervous system. And our nipples are part of it.

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