Trembling in penis while jelqing
Yesterday I did a routine where I was feeling a slight trembling as I pulled the blood through my penis. It didn’t hurt, or at least significantly, and I am just wondering, is that the sign of doing the process correctly? One thing I did differently this time was be sure to do a “correct warmup”, where I made sure to keep the water on the rag hot over a period of ten minutes, longer than usual and more intentional too.
Is that the reason it happened? Is it a good sign?