All spiritual aspirants learn methods of transforming energy, but only those in the highest levels of instruction learn the real reasons why and how.

"Pranayama is the control of all life-forces." - Sankaracharya

"Pranayama is not, as many think, concerned solely with the breath; breath indeed has very little to do with it. Breathing is only one of the many exercises through which we get to the real pranayama." - Vivekananda, Raja Yoga

"The aim of Pranayama is the control of Prana. Pranayama begins with the regulation of the breath for having control over the life-currents or inner vital force. In other words, Pranayama is the perfect control of the life-currents through control of breath. Breath is external manifestation of the gross Prana. A correct habit of breathing must be established by the regular practice of Pranayama. [...] There is intimate connection between the mind, Prana and semen. If one controls the seminal energy, the mind and Prana are also controlled. He who has controlled his seminal energy has also controlled his Prana and mind." - Sivananda, The Science of Pranayama

This is a lecture from the free online course Fuel for Spiritual Experience: Meditation and Energy

Course Description:

Spiritual experiences are not difficult to have if you know the laws of nature that manage them. Learn the exact science of spiritual practice that leads to the awakening of the consciousness, by means of harnessing the most powerful energies in the universe.

Within us are the energies that can empower the realization of our full potential, through which we can become completely developed beings. Learn about the steps of meditation, vital energy, ojas, sexual transmutation, pranayama, kundalini, and much more. With these tools, we can reach complete liberation from suffering, and thereby be of great service to others.