Much has been explored about what to eat. The trigger in modern times was the cardiovascular risk starting with cholesterol. Subsequently, types of fat gained importance. Fad diets like Atkins, South Beach, Ketogenic, Paleo, etc. emerged. Public awareness of kinds of carbohydrates, fats, and proteins was kindled.

In addition to what is eaten or, irrespective of it, paying attention to how the meals are eaten will add great benefit health wise. How to eat is an art in itself. This art can be explored in ancient cultures and related books. Though, scientific studies can be found related to such acts. These studies do not directly study the art but can be correlated to the ancient art of eating.

This subject of how to eat a meal is mainly explored here through works of Siddhas (accomplished persons) of South India and other Tamil literatures.

Advances in agriculture and food production in USA to mass produce and store influence what is on the American table and the current eating habits. The time of eating is another important factor, to be in tune with circadian rhythm for better metabolic health.

There is scope for future studies to research directly the benefits of art of eating practices for metabolic health and prevention of obesity. Towards that, correlation of the process of eating like mastication, timing with appetite and ways to reduce craving are explored with available scientific studies.

Keywords: Appetite, Metabolic Health, Oral processing.