A big part of the physiological effect is having your wife see another man demote your ranking on the totem pole while moving himself to the top.
That doesn’t go away after the experience.
My wife's bull has educated her so that I no longer take between 10 and 15 minutes, but between 1 minute and 1 minute and a half.
My wife just has to show me that she only wants her bull. She even manages to masturb me just by looking at bull"s body.
Its concept is basic. If I cum, she is calm.