I forgot to mention that he thinks "Five Secret Tibetan Rejuvination Rites" is an excellent book. He's been doing yoga for over 20 years, and he told me that those rites stimulete energy flow more than any other exercises. With affirmations one transforms that "liberated" energy into what one wants.
What I know for sure is that preserved sex energy can be used more wisely. There is a rite in "Five Secret Tibetan Rejuvination Rites", which is very similar (same actually) as one yoga exercise, which transform sex energy and leads it upwards towards head. that way your whole body is fed with that energy. Results are supposed to be astonishing, rejuvelination just one of them.
And, yes, recommendation number 4 (in previous post) is for non-fasting periods, of course.