Tube

Should I wear a tube on my cock to stretch it at night?

You mean while you sleep? It’s best to leave sleep for sleeping and do PE when you are awake and aware of what is going on.

But the tube doesn’t stop the blood flow

It’s just like an extender!

The absolute best night exercise is your bodies normal function in the form of nocturnal erections. Don’t mess up a good thing.

Now I am curious, What is this tube?

Tis a myserious force. And no.