Which group of people tends to burn the most energy and eat the most food?

The group that tends to burn the most energy and consume the most food is active teenage boys. During adolescence, particularly for boys, there is a significant increase in metabolic rate and energy expenditure due to growth spurts, hormonal changes, and increased muscle mass. Active teenage boys engage in high levels of physical activity, whether through sports or other pursuits, which further increases their caloric needs.

Teenagers experience rapid growth and development, which demands greater energy intake to support not only their daily activities but also their body's developmental processes. This is particularly true for teenage boys, who typically have higher muscle mass and testosterone levels compared to girls, leading to increased caloric needs and higher energy expenditure.

In contrast, while active adult women and active elderly individuals also burn energy and may have increased caloric needs due to their activities, their energy expenditure tends to be less than that of active teenage boys. Inactive teenagers have lower overall energy needs because their sedentary lifestyle results in minimal caloric burn. Thus, the combination of age-related factors, physical activity levels, and physiological responses contributes to why active teenage boys stand out in terms of energy expenditure and food consumption.