A very active person uses a large amount of energy and therefore has a high

metabolic rate. Their body processes nutrients more efficiently and quickly, allowing them to burn through calories faster. This can result in a higher calorie intake requirement to sustain their activity level, as well as a faster metabolism overall. They may also have a higher resting metabolic rate, meaning they burn more calories even at rest compared to someone with a lower activity level. As a result, they may need to eat more frequently and consume more protein and carbohydrates to fuel their activity and support their muscle growth and repair. Additionally, regular exercise and physical activity can contribute to increased muscle mass, which further boosts metabolism.