Benefits of Fasting
Great physiological changes take place in the body during the fast, as evidenced by the acutened senses, the improvement of digestion, the enhancement of metabolism, the increase of excretion, the disappearance of symptoms, the clearing up of the eyes and the skin, the increased feeling of wellbeing, the rejuvenation and the mental improvements that accompany the fast.
--Herbert Shelton "Fasting for Renewal of Life" (1974)