You have to go the scientific way , everyone have an idea put no one can back it up fact. Best advice is to do like the doctor , the human body reach is maximum load after 3 days , so jerk off and measure it with a seringue , average man shoot 6 ml.

Now if you want to test all those "advice" do the same pattern as in a clinic , 3 days off and after shoot and measure.

All those pill are reap off i did work in a sex shop in the past and trust me it aint worth it.