Obese people and those desiring to lose weight should perform hard work before food . . . Their meals should be of a fatty nature as people get thus satiated with little food. They should, moreover, eat only once a day and take no baths and sleep on a hard bed and walk naked as long as possible. —Hippocrates (from Procope J. Hippocrates on Diet and Hygiene, Zeno, London, 1952).
