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 3000 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