You can
SSJ as long as your hands are able to and as long as you don't feel pain or numbness in the glans. The
SSJ is basically the original/manual idea behind clamping, which basically serves the same purpose. After a few months if you feel like you are ready for more intensity, look into the clamping section of the forum.
I have a funny background with the
SSJ as I basically came up with the idea on my own before I saw it here. At the time I was doing the
newbie routine from this site, but I had not seen enough of the site to learn about the
SSJ. What I would do is jelq for a while and when I got too horny id grip the base of my penis, kegel in as much blood as possibly, and bend my dick as much as I could (almost exactly the
SSJ that DLD advocates).
***************My biggest piece of advice with the
SSJ is this: make sure you do it in connection with your jelq routine. I have found that when I jelq for about 5 minutes, then do one or two 1 minute
SSJ's, then go straight back to jelqing for 5 minutes, then back to one or two
SSJ, etc, I get the best expansion. This is a similar idea to what DLD has advocated for using the
BM in conjunction with some manual girth work, and in my experience combining the two into one routine done at the same time is the best rather than doing them separately.