The east always was the country of secrets and riddles for the West. Many legends and fantastic stories were distributed about India, mainly, about mysterious knowledge of the Indian wise men, philosophers, fakirs and sacred. And really, many facts for a long time testify that, except for the knowledge embodied in ancient books of India, in its sacred scriptures, legends, songs, poems and myths, there is still any knowledge which cannot be gathered from books which is not opened publicly but which traces are undoubtedly visible.
The ancient yoga history gives different variants of translation for word. It can be translated as unification, union or submission. In the first value, it is close to Sanskrit root. One of word meanings yoga is correct action. To follow yoga means to subordinate to the control of one over systems of yoga the ideas, feelings, internal and external movements, etc. That is those functions, which in the majority work without any control.
Ancient yoga history gave life to yogis - those who lives and operates according to yoga. They pass or have passed the certain school and live according to the rules known only for them and incomprehensible for uninitiated, according to knowledge, which indefinitely increases their forces in comparison with force of usual people.
They have nothing in common with fakirs, i.e. with people, trying to subordinate a physical body to will by means of sufferings. Fakirs are the ignorant fanatics quite often, torturing for achievement of heavenly pleasure, or the conjurers showing for a payment miracles based on dexterity and on schooling of a body to accept the most improbable positions and to carry out functions by abnormal image.
The ancient yoga history produced science, i.e. methods that yogis use for development in of unusual forces and abilities go from an extreme antiquity. Thousand years ago, wise men of ancient India by experience concluded, that forces of the person in all spheres of his activity could be indefinitely increased by correct training and schooling of the person to operate the body, mind, attention, will, feelings and desires.
In this connection, the science about the person in ancient yoga history was at completely incomprehensible level for us. It is possible to explain it only to philosophical schools existing at that time have been directly connected with esoteric schools. These pre-vedic and vedic, yoga-bhasya schools counted the person the uncompleted essence, which is allocated in set of the latent forces. The idea is that these forces sleep in a usual life at the usual person. However, they can be woken and developed by means of a special sort of the life, the certain exercises, special work above itself. It also refers to as yoga.
Acquaintance to ideas of yoga allows the person to learn to understand the latent abilities and propensities, to find and determine, in what direction of them it is necessary to develop; second, to waken the latent abilities and to use them on all lives.