Cooking itself was a labor-intensive process. Preparing a meal meant washing, peeling, chopping, and kneading. This physical engagement with food not only added small bursts of activity to the day but also created a psychological connection to the meal. Because food preparation took time, eating became an intentional act. People ate when they were hungry and stopped when they were satisfied, largely because the constant environmental cues to snack—vending machines on every corner and 24/7 delivery apps—simply weren’t part of the reality.
Predictability also played a major role in metabolic health. Eating followed a consistent, tripartite structure: breakfast, lunch, and dinner. Snacking between meals was culturally discouraged and practically difficult, as portable, packaged snacks were not ubiquitous. This allowed the body’s hormonal signals for hunger and satiety to function with greater accuracy. When the body knows exactly when to expect nourishment, it can regulate its energy expenditure more effectively.