Tai Chi Chuan is one of the oldest school of Chinese Martial Arts, as it is also one of the most popular exercise around over all the world. Tai Chi Chuan can be practiced by people of all ages. By the practice of slow and soft movements of Tai Chi Chuan you can get a mental peace and a top physical condition. The word Tai Chi comes originally from one of the oldest books in Chinese literature: I-Ching or the "Book of Changes". The concept of this philosophy dates from more or less 3,000 B.C.; according to I-Ching, Tai Chi gives origin to two basic concepts: Yin and Yang; Yin represents softness, weakness, the feminine, Earth, Moon, Night, sadness the negative and all the dark side of matter, Yang represent hardness, strength, masculine, heaven, day, Sun, happiness the positive and the bright side of matter