The book is written in the classic style of Swami Sivananda, in simple, almost childish language. This work presents a traditional view of brahmacharya, which many modern readers may seem irrelevant to our time. However, we should not forget that brahmacharya is one of the rules of Yama, and adherence to this rule is the basis of successful yoga practice. Brahmacharya is the foundation on which all further practice is built, and if the foundation is unstable, then at any moment a collapse of all your spiritual achievements can occur. Many people do not believe that complete brahmacharya is possible at all, and begin to come up with their own interpretations of this concept, justifying their own weakness. In fact, a lot depends on the society in which a person is located. If you live in a big city and you are surrounded by materially oriented people, then what kind of brahmacharya can we talk about? But if you are in a blissful atmosphere, and in the company of spiritually developed individuals, then brahmacharya will be observed automatically, without much difficulty. This book can help the reader think about how he spends his inner resources, and will encourage you to direct all your energies towards the goals of spiritual evolution.