A large body of evidence supports that fasting cleanses our body of toxins and forces cells into processes that are not usually stimulated when a steady stream of fuel from food is always present. When we fast, the body does not have its usual access to glucose, forcing the cells to resort to other means and materials to produce energy. As a result, the body begins gluconeogenesis, a natural process of producing its own sugar. The liver helps by converting non-carbohydrate materials like lactate, amino acids, and fats into glucose energy. Because our bodies conserve energy during fasting, our basal metabolic rate (the amount of energy our bodies burn while resting) becomes more efficient, thereby lowering our heart rate and blood pressure. Ketosis, another process that occurs later into the fast cycle, happens when the body burns stored fat as its primary power source. This is the ideal mode for weight loss and balancing blood sugar levels. Fasting puts the body under mild stress, which makes our cells adapt by enhancing their ability to cope. In other words, they become strong. This process is similar to what happens when we stress our muscles and cardiovascular system during exercise. As with exercise, our body can only grow stronger during these processes when there is adequate time to rest and recover. That’s why short-term fasting is recommended.
Although fasting can be challenging and sometimes uncomfortable, the mental and physical benefits can: