That's one way to know you're using just a little too much tension. When you get to that point, back off the nuts about 3 full turns and see if the problem goes away. If not, back off 3 more. It's best to not wait until numbness sets in before doing this, but instead just as you feel coldness coming on.bigjim7 said:Do you really think so I have found that even if you have just a little too much tension you get numb/cold head just like a vimax/jes [words=https://shop.mattersofsize.com/products/sizegenetics-penis-extender]extender[/words]. Suppose it's just my personal preference then.