Man is essentially what he eats, is an adage that is popular in modern times. \u0100yurveda, an ancient science, attests to this fact. According to this science, man\u2019s eating habits play an integral role in his mental make-up as well as his physical well-being. The basic tenet of \u0100yurveda states that health (sv\u0101sthya) is a state of equilibrium of three planes - the physical (and physiological,) the mental, and the spiritual. An aberration (do\u1e63a) in any one of the planes results in ailments. The equilibrium is said to be maintained by the three pillars of healthy eating, sound sleep, and regulated sex. \t\t\t\t\t \u0100yurvedic texts elaborate in detail, the concept of healthy eating. The most interesting arguments on food revolve around the psychological effects of food on man. \u0100yurveda states that certain foods result in a contented state of mind, certain foods are excitatory, while certain other foods result in lethargy. In accordance with the psychological responses a particular food engenders, that food is categorized as s\u0101tvik (calming,) r\u0101jasic (excitatory,) or t\u0101masic (causing lethargy.) A diet is chosen keeping in mind the constitution (prak\u1e5bti) of the person in question, as well as the tasks he\/she intends to fulfill. If for instance, a person intends a yogic life, he\/she must adhere to a s\u0101tvik diet, a diet that is comprised of foods that have a calming effect. This diet may include vegetables, fruits, tubers, nuts and honey, while eschewing extremely bitter, pungent or sour foods. Sv\u0101tm\u0101r\u0101ma allocates a separate chapter to yogic diet in his work, Ha\u1e6dhayoga Prad\u012bpik\u0101. He states, \u092e\u093f\u0924\u093e\u0939\u093e\u0930\u0902 \u0935\u093f\u0928\u093e \u092f\u0938\u094d\u0924\u0941 \u092f\u094b\u0917\u093e\u0930\u092e\u094d\u092d\u0902 \u0924\u0941 \u0915\u093e\u0930\u092f\u0947\u0924\u094d\u0964 \u0928\u093e\u0928\u093e\u0930\u094b\u0917\u094b \u092d\u0935\u0947\u0924\u094d\u0924\u0938\u094d\u092f \u0915\u093f\u091e\u094d\u091a\u093f\u0926\u094d\u092f\u094b\u0917\u094b \u0928 \u0938\u093f\u0927\u094d\u092f\u0924\u093f\u0965 mit\u0101h\u0101ra\u1e43 vin\u0101 yastu yog\u0101rambha\u1e43 tu k\u0101rayet\u0964 n\u0101n\u0101rogo bhavettasya ki\u00f1cidyogo na sidhyati\u0965 One who practices Yoga without adhering to a regulated diet invites hordes of ailments and never attains the fruit of Yoga.