Masturbation

[Ethernysana]

Some links to consider:

http://www.taocontrol.com/pages/injaculation.php
http://authentictantra.com/tantra-blog/s...your-life/
http://deviward.me/2012/04/14/5-surprisi...retention/

Some books to consider:

http://api.ning.com/files/N8uvX3yHUYWMaK...Energy.pdf
http://books.google.ca/books/about/The_M...QPJwAACAAJ
http://api.ning.com/files/1pYGM2xUDQmqZa...akChia.pdf

Some esoteric/spiritual teachers who hint about the seed or semen and the importance of retaining it:

Sevan Bomar
Santos Bonacci

Read about the history about the importance of virgin blood(period):

http://www.bibliotecapleyades.net/biblia...a.htm#Part 1

My insight:

Male energy and ejaculation is different than a Female's. Males lose physical/mental/spiritual energy each time that one ejaculates if one does not know the correct breathing techniques or visualization techniques to circulate that orange ray or transmute that orange ray into higher rays. While on the other hand, a females window of opportunity for transmutation/transformation is during their period.