Loading up our bodies with food three times a day is a cultural habit, not a biological need. Instead, eating smaller portions four or five times a day delivers a steady stream of nutrients, blood sugar , and energy to the body throughout the day. Less taxing on the digestive and metabolic systems, smaller meals prevent overloading and excess waste accumulation. Yet another benefit : dividing caloric intake in this way reduces your risk of heart disease.
Your present stomach (empty) volume-size is about the size of your fists combined. However, it can be 'forced' to 80 times the size-volume of it's empty- state.