Yoga is derived from the Sanskrit word "yuj" and means to connect or control. Yoga is the science to know and transform body and mind. The mind moves constantly, by praticing yoga you learn to control the mind with attention. The body will open up and the mind becomes tranquil. You develop inner peace, self-insight, connecting the inner and outer world.
Hatha Yoga shows you how to experience the inexhaustible power of nature within yourself. By practicing yoga, body and mind are opening. Peace and tranquility are rising. In classical yoga, it is told that this peace is like a wrinkle-free surface of a lake where you see your true essence reflected. The habit of perceiving a coloured reality is shattered and you see things as they really are.
"By non-attachement even to that [all the powers],
when the seeds of bondage are destroyed,
emancipation and aloofness follow - he is like an island"
- Yogasutram Patanjali 3.50