In this animation/picture:
http://www.anat omyexpert.com/s … tail/5320/1821/
the pelvic floor is shown from back/underside.
you can see clearly that it originates on the downside, at the height of the anus, but is moving left and right from the BC muscle to the topside.
On the topside you can with concentration "pull it upwards" which also pushes boths sides/"legs" towars each other.
This then also kind of pushes the BC muscle outwards.
You can try to engage the IC muscle and hold it and then engage the BC muscle. For me this enables me to fill my flaccid dick with some blood through the BC while holding it with the IC kind of.
I hope to reach a point where I can inflate my dick just by engaging these muscles.
Maybe up to the point to get an errection without any other stimulus. Not sure if possible though…
Its basicly the similar to the technique of ballooning without having to use your hands.
here it reads:
hxtp://www.ncbi.nlm.nih.gov/pmc/articles/PMC1351051/
"In the rigid-erection phase, the ischiocavernosus and bulbocavernosus muscles forcefully compress the spongiosum and penile veins, which results in further engorgement and increased pressure in the glans and spongiosum."
Concious engagement of the IC muscle helps me to get a really full errection where the head seems to fill out completely.
I dont know why but without that concious involvment its hard for me to achieve this "101%" errection.
well, much to try and learn. open for any suggestions and ideas.