Which person should increase calorie intake due to a lifestyle choice?

The individual who should increase calorie intake due to a lifestyle choice is an athlete. This is because athletes have higher energy expenditures due to their rigorous training and competition schedules. Their bodies require additional calories to support not only physical activity but also muscle recovery, energy replenishment, and overall performance. Consuming adequate calories helps athletes maintain their energy levels, improve strength, and enhance endurance.

In contrast, a sedentary adult typically does not require a higher caloric intake as their energy expenditure is lower. A student preparing for exams may require extra nutrients for cognitive function, but this does not necessarily translate to an increased caloric need. Older women generally have lower metabolic rates and may not need additional calories unless advised for specific health reasons. Hence, the demanding nature of an athlete's lifestyle distinctly necessitates a higher intake of calories to meet their physical needs.