Thanks for your reply, Victor. Certainly it helps.
May I know what do you (and many others) mean by "feeling drained"? I am mainly refering it to the mental and physical tiredness/laziness after orgasm. But it seems that you're refering to something more subtle..... (like ecstatic currents)
Also, do you maintain exactly the same sitting practices on your day 1 and 2?
Physically, the pelvic area feel particularly drained after orgasm. So I wonder whether I should be doing siddhasana and mulabandha after such a strong stimulation and drain of that area from orgasm.
My feeling of well-being don't seems to have too much a cause-effect relations with orgasm as you. (provided that I have enough rest and sleep right after the orgasm) In fact, I usually have orgasm when I feel dull and/or stressed, and I don't have much thoughts on sex when I feel more energetic. Is this because after years of practices, guys like you are more effective in using the sexual energy, while for me the semen is simply something which don't have much use? What's your experience years ago?