Nipples tend to get hard when we’re cold or aroused, but why? Julian explains that here.
Why Do Men Have Nipples? –
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What Nerve: Different Nerve Cells Cause Hard Nipples, Goose Bumps
“One type of nerve makes nipples go hard, another contracts the tiny muscles around hair follicles, making them stand up and produce goose bumps, the researchers said.”
Sympathetic Nervous System
“The sympathetic nervous system activates what is often termed the fight or flight response. Like other parts of the nervous system, the sympathetic nervous system operates through a series of interconnected neurons.”
Scientists Finally Figured Out How Your Nipples Get Hard
“Getting hard nipples is definitely one of the weirder parts of being turned on. But how does that actually happen? Well, according to a new study, that process relies on some highly specialized cells.”
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