Both the quality and the quantity of life energy are determined by the intake of food, water and air, as well as by the elimination of waste products and by thought and emotion. Anger, jealousy or hatred actually create poisonous substances within every cell; whereas love, kindness and compassion have a healing, soothing and regenerating effect on the body. Day by day we build ourselves by what we eat and drink, by the air we breathe and by our mental processes. Contemplation on this can teach us that every day we have a choice: to build or destroy.
Dr Svami Purna – Yoga, A Practical Introduction published by Element Books