took these today
Before: 7x6 starting
Next: Packing a 2.5x9 cylinder, then filling up a 3x9 cylinder
After: Fat monster
I've pumped for like 3-4 years now, if I've gained anything permanently from pumping, it may be girth. Aside from that, you seem to adapt to pumping and can get pumped more quickly than someone who is just starting out.
I don't really look at pumping as a means of permanent size increase. It's just a fun little activity to get to a ridiculously fat size for occasions.
When I do pump I usually do it for a few hours at a time with small breaks inbetween.
I only pump if I'm in the mood for it, days that I'm not horny at all are not pump days. The closing thing to warming up I do is I initially get in the pump while in the shower, that way my body is very heated and relaxed.
I'm not sure I know what you mean by warming down. When I'm done pumping I usually jerk off and its like a cum cannon at that point, spraying up to 4-5 feet lol