1) For plastic exchange reactions (for the synthesis of substances), ATP energy is needed, which is formed as a result of energy exchange.
2) And for energy exchange reactions (for the breakdown of substances), substances are needed that are synthesized as a result of plastic metabolism.
3) As a result of plastic metabolism (protein biosynthesis), enzymes are formed that are involved in energy metabolism reactions.
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.