Why?
It comes out only when it is ready to come out and not a moment sooner. You can’t force it. The best you can do is make the process more pleasant by sitting in a room with nice facilities when it’s happening.
It can only happen if, first, you have taken in something from the outside world that then goes through all sorts of internal processes that you are not even conscious about, to then finally come out, and in doing so, it often makes you feel a sense of relief.
Ruth Van de steene 