In a nutshell, I've noticed if I pump to a comfortable limit whilst fully erect, I seem to be gaining in girth. It's a little unusual in that the gains "creep" up from the base. I first noticed my base girth expand from less than 5.5" to now 6.25", and the 6.25 number seems to be working it's way up. My mid shaft girth is now about 5.7", and it was 5.5" for the longest time. What I've done is, with me fully 100% engorged, I stick it in the tube and pump halfway to a comfortable level. I relax my PC muscle to make sure the valves responsible for pumping blood into my dick isn't closed off. Those muscles seem to be responsible for closing off the flow in both directions, so any negative pressure felt by the penis could induce edema which is not what I'm after. Anyway, I then do a number of things simultaneously. I've been doing this a while, so I'm very used to the procedure (and my dick is used to the severe condition I put it through.) I induce a harder erection (visualization, fantasies, porn, etc.) *and* I do a "reverse kegel" (imagine forcing the pee out rather than holding the pee back with a regular kegel) *and* I pump the pressure up to an almost painful level. Once it feels like your erection is gone, release the vacuum and rest. Do this until fatigue sets in and you can't achieve another erection. The fatigue, for me anyway, is such that I won't be able to have sex for about 8 hours. I want to stress this, DO NOT DO THIS IF YOU'RE UNACCUSTOMED TO PUMPING. I'm also being purposely vague as to the amount of vacuum I'm inducing in the tube. Normal recommended level is around 3-5" HG. If you don't have a gauge, do not even attempt this. I owe my routine to the guys at Thunder's. The only reson I'm posting it here is because I've gotten a few questions, so I thought I'd create a thread I could link to in the future.