Sumo wrestlers' body composition is the result of a carefully designed lifestyle, not just random eating. The goal is to maximize body mass while maintaining explosive power and flexibility — a combination that requires specific nutritional strategies.
Chankonabe (ちゃんこ鍋): This is the staple meal of every sumo stable. It is a protein-rich hot pot (nabe) containing chicken, fish, tofu, vegetables, and various other ingredients in a dashi broth. Chankonabe is nutritious, calorie-dense, and scalable — a perfect communal meal for a stable of wrestlers. Restaurants near Ryogoku (Tokyo's sumo district) specialize in serving chankonabe to tourists.
The meal strategy: Professional wrestlers typically skip breakfast (an unusual practice). They train intensely in the morning on empty stomachs, then eat an enormous meal at lunch, followed by a mandatory nap. This pattern — eating then sleeping — promotes weight gain by slowing metabolism. A second large meal follows in the evening.
Caloric intake: Top wrestlers consume 5,000-10,000 calories per day, compared to the average adult's 2,000-2,500. Despite their size, sumo wrestlers are athletic — their apparent body fat conceals tremendous muscle mass, and flexibility tests often show wrestlers performing splits with ease.