Well there's other ways to improve circulation other than jelqing but still if you stop doing these things and go back to living how you was then like CUSP82 said you will go back to the way you was. It's like saying if I diet for a month then will I be healthy forever, the answer is no, you would have to diet for the rest of your life. If you take a supplement for circulation then it will work as long as you take it. The same goes for PE.