“Energy requirements of adults are based on physical activity and age.” Justify the statement highlighting the energy needs.

The energy requirements of adults vary based on their level of physical activity and age due to differences in metabolic rate, body composition, and lifestyle factors.

1. Physical Activity: Individuals engaged in moderate to vigorous physical activity require more energy (calories) to support increased muscle activity, heart rate, and overall exertion. Sedentary individuals have lower energy needs compared to those who are physically active.

2. Age: Energy needs tend to decrease with age due to declines in muscle mass and metabolic rate. Older adults typically require fewer calories than younger adults to maintain weight and energy balance.

By considering physical activity levels and age, energy needs can be estimated more accurately to support overall health and well-being. Matching energy intake with expenditure helps prevent weight gain or loss and supports optimal physical and cognitive function throughout adulthood. Adjustments in dietary intake based on activity level and age contribute to maintaining a healthy body weight and meeting nutritional requirements.