Hatha yoga : “ Ha” and “tha” means sun & moon respectively. They stand for all types of dualities in life like happiness and sorrow, pain & pleasure, day & night, etc. The ultimate purpose of hathayoga is to bring about an equilibrium, balance, harmony & unity in the dualities of life by creating balance between the interacting activities and processes of the pranic and mental forces. So, hatha yoga not only strengthens the body and improves the health but also activates and awakens the higher centres responsible for the evolution of human consciousness.