"Brahmacharya", in the broadest sense of the term means "Moving or conducting oneself in Brahman." Brahmacharya is purity in thought, word and deed. Brahmacharya is celibacy and ontinence. Brahmacharya includes the control of not only sex or reproductive Indriya (organ) but also other Indriyas.
This world says Swami Sivananda is nothing but sex and ego. Ego is the chief thing. It is the basis. The sex is hanging on the ego. If the ego is destroyed by Vichara or enquiry of "Who am I?", the sex-idea takes to its heels by itself. Man-master of his destiny - has lost his divine glory and has become a slave, a tool in the hands of sex and ego on account of ignorance.
This book serves as the ultimate guide for celibacy and semen retention. It also acts as a manual for achieving purity in every aspect of life, leading to self-realization and heightened consciousness. I strongly urge anyone on a spiritual journey to read this book.