The artist (and researcher) CurioBubbles posts fun little comics on Reddit about the human body and why things work the way they do. Worth checking out if you like mixing science education with cute artwork.
I mention it here because a recent comic covered why you can get pins and needles after compression on a part of the body. I always thought it was simply due to blood rushing back, but it turns out it’s a bit more complicated than that. The blood coming back does wake the nerve up, but then the sensation you feel is the nerve basically firing off a bunch of noisy signals as it tries to reconnect with the brain. I’m sure anyone who has played with nipple clamps or similar compression toys can attest to how painful that can be. They hurt a bit going on. They hurt like hell coming off.
I’ve noticed that a lot of dommes can be positively gleeful when it comes to removing clamps that have been on for a time. Rubbing the affected area afterwards is another favorite trick. That really messes with the nerve while it’s still recalibrating!
Image source via tumblr. Not sure who originally created it.
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You can see the original full size version