Be careful about your physical health. Satisfy the demands of nature - the car must be given the petrol it needs. Else, your head might reel and your eyes get blurred through exhaustion. How can thoughts of the Lord be stabilized in a weak frame? Only, do not forget the purpose of this body when you are tending it. A road-roller is fed with oil and coal and other types of fuel. Why is it kept in good trim? In order to mend the road, isn't it? Similarly, remember that you have come embodied, so that you might realize the end of this cycle of birth and death. For that sake, use the body as an instrument, that is all.

- Sathya Sai Speaks, Vol. 1, pg.