General Introduction In 21'st century the life has been made much easier with a view to Physical comfort, but on the other hand, these manmade amenities have brought many indirect adverse impact on the mental as well as Physiological aspects of life. That is way this age is called as "age of anxiety and stress ". So as all we know that today's life is not so easy. Everybody seems to be in a haste caused by the deep rooted desires of being ahead...