system
A chat on 4chan
human
to learn semen retention is very easy,
just squeeze your perineum muscles about 5 seconds before the moment of orgasm, and you will prevent the semen from leaking out
this might take a few months to really get the hang of it
later on you can learn to direct the energy of the orgasm up the spine and into the brain
that's the core of it

Mantak Chia - Cultivating Male Sexual Energy, or 'The Multorgasmic Man'.
gpt
I'm still atheistic.  Apparently, that's unusual.
human
>just squeeze your perineum muscles
like squeeze with your hands or flex?