Manual stretches may cause damage if done incorrectly.
I’ve been reading posts lately in regards to any long term damage people managed to have caused themselves while doing PE, and I was surprised to find a couple posts stating the manual stretches actually caused some permanent decrease in sensation. I found this interesting, because when I first attempted doing PE about 3-4 months ago (I think it was), I had to stop due to a pain I felt at a point about 2/3 down the length of my penis.
Now I know all the vets here know the anatomy of the penis inside and out, but maybe this’ll be news for some of the newbies out there. The dorsal nerve of the penis is the nerve that innervates the penis. There are two dorsal nerves actually, and they run side by side down the top of the shaft. Now muscle and skin and arteries and veins etc, can stand to be squeezed and have the O2 taken away from them for quite some time without any permanent damage being done - maybe even a half hour or so for some structures, because they’re just not all that metabolic in the resting state. But nerves are much more prone to injury. There’s an injury called Saturday night palsy for example where you basically kill the radial nerve in your arm. They call it Saturday night Palsy because it often happens when a guy falls asleep drunk with his arm hanging over the back of a chair or something and he wakes up unable to feel or move part of his arm.
Anyway, the point is that nerves are delicate and though they can stretch like anything else with long stints of traction (ie hanging), they don’t like to be acutely deprived of O2, so kinking them is a bad idea. Anyway, I realized that when I was doing the manual stretches, since I was new to this I really didn’t know how to grip my dick so well. I’m also uncut which added to the problem. Anyway, I would grip it the best I could, but when I grabbed the end of my penis I created a kink so that my glans sort of pooched out anterior a bit. The force wasn’t evenly distributed down in other words. Not sure if you can picture what I’m saying or not, but it’s dangerous. I think it’s dangerous while jelqing as well to place a lot of pressure on the dorsal (top) side of the penis. When I jelq I make sure that most of my pressure is being placed on the sides and on the bottom of the penis with very little pressure on top. Slinky’s might be OK since they don’t acutely kink the nerves for more than a second, but they’re definitely not for beginners.
Just wanted to reiterate the importance of avoiding compression of the dorsal nerves. Screwing with those guys is the only way I can see sensation loss occurring. So be careful.
This is why I think device assisted PE has the potential to be safer for beginners. Less margin for error if you follow the instructions.
Just my two cents.