If all the pressure is released into a strike/throw etc, and pressure is what moves you, it is going to take some time to build it back up again. I assume that being able to maintain some pressure would allow you to do multiple strikes/movements without having to reset the body...
Hunter, I was most impressed, amazed and startled by Akuzawa Sensei's telling me that you keep your power inside yourself
and that all techniques are actually done within yourself--that what happens to the opponent is because he responds to how you're managing yourself. Of course, at the same time, I know he uses the term nyu ryoku
, meaning to "input power" to the other person...
But my impression is that you channel the internal pressure into your arms and legs but don't let it actually go out of yourself.
Of course, I'm still scratching my head over all that....