How to explain that in adolescents the main metabolism is higher than in adults?

The rate of basal metabolism decreases as the body grows older. A teenager is still a child. In children, the rate of basal metabolism is higher than in adults, because metabolic reactions and more motor processes pass faster, as well as hormones.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.