If you want a lightning fast boost in girth before sex, just go to the bathroom or take a shower and all you need to do is maybe 5-10 minutes of high intensity SSJ. If you are open with your partner, you can do it in front of them as a part of foreplay. You don't need an hour. You'll get a guaranteed huge quick pump in girth with little retention! From my experience, anywhere from 0.25 up to 0.35 inches! It's super fast and takes minimal effort. Careful though as you might pop blood vessels if you are not trained to handle high intensity SSJ, so take it easy.
If you want more gain before sex, you'll need to do a session of 5x5x3.
If you want more gain before sex, you'll need to do a session of 5x5x3.