How Pumping Works
When you see your cock pumped up like a summer sausage and feel it twice as
heavy as normal in your hand, it's amazing. How could it get so much bigger this
way than it does when you have a massive hardon?
The answer is Time x Pressure...
When you have an erection, valves in the blood vessels that supply the penis
close, trapping the blood so that more flows in than out, until you get hard and
reach equilibrium. Your level of excitement determines how many valves close and
how tightly, so you start out soft enough that your partner can tolerate
penetration, and end up hard enough to drive your partner wild and deliver your
load in deep.
If you've ever been erect for a long long time, or worn a tight cock strap, you
may have noticed that your cock gets larger than normal, and a little spongier
feeling. What you've got going there is a bit of a pump!
When you pump, you create a partial vacuum around your penis, so the fluid
pressure inside it exceeds the air pressure around it. Under these conditions,
the penis expands until the pressure is equalized; basically, it compresses the
space around it and thus raises the air pressure.
The penis has two ways to expand: by filling the corpus cavernosa with blood,
and by puffing up the rest of its tissues with lymphatic fluids, which seep into
them from the blood vessels. Thus, when you pump up, you'll notice that you
stretch out quickly at first, until you have an erection or at least the
sensation of an erection. This is your cavernosa filling up. Thereafter, you
expand much more slowly, because it takes a long time for lymph to seep into
your tissues. At least, it does until the pathway is established - so you'll
find that towards the end of your session, the tissues will puff up faster.
Because the cavernosa can fill up quickly, you can respond rapidly and
comfortably to fairly high vacuum pressure at the start of your session. But
it's a bad idea to start with high pressure, because that pressure acts on ALL
your tissues, not just the cavernosa. Therefore, you'll be forcing fluids into
your tissues faster than they can adapt, and you'll put too much pressure on
your smaller blood vessels.
Instead, you should start with minimal pressure and let your cavernosa fill up
at a leisurely pace. As your dick expands, you'll need to withdraw more air from
time to time to maintain that level of vacuum. As your tissues adjust, you'll be
able to gradually increase the pressure. Increasing the pressure helps you
maintain your rate of expansion. But you have to limit yourself to a rate that
always feels comfortable, otherwise you might stretch the tissues too much.
When you pump you are trapping blood and fluids in your penis. Trapped blood
gets depleted of oxygen, thus starving your penile tissues. Therefore, you need
to refresh the blood supply often. One way to do this is to "milk" your
cylinder, thereby pump-jacking your dick. Another way is to take frequent breaks
from the tube - about once every 15 minutes, or whenever your skin looks dark or
you feel achey. You should also start semi-hard rather than fully erect, so that
your blood valves are wide open.
During the early stages of your session, your penis elongates noticeably, but it
expands even quicker in girth. Basically, you elongate to your normal erect
length until you pack your tube from side to side. Thereafter, the vacuum
pressure is focused on your head, pulling your penis forward. From here on you
get really long out as the suspensory ligament that holds your penis into your
groin stretches. This is when you feel the most intense pleasure from pumping,
but again you have to contain yourself - too much pressure for too long may
cause blisters or bruising of your head.
A typical pumping session lasts anywhere from 30 minutes (a quick pump-up before
sex) to an hour (a nice moderate pump) or several hours (an occasional "get
huge" session). When you take it nice and easy, you'll be amazed at how big you
can get and how good it feels. Do it right and you'll have bigger, harder
erections for a couple days afterward, and you'll fill your pants like you've
never filled 'em before!
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