Vitamins play an essential role in energy production by acting as coenzymes in various metabolic pathways. For instance, B vitamins, such as B1 (thiamine), B2 (riboflavin), and B3 (niacin), are crucial for converting carbohydrates, proteins, and fats into energy. These vitamins assist in the production of adenosine triphosphate (ATP), the primary energy currency of the cell. Additionally, certain vitamins contribute to red blood cell production, ensuring efficient oxygen transport to muscles during physical activity, thereby enhancing overall energy levels and performance.