What is metabolism?
Metabolism is a series of processes that control how the human body creates and uses energy. (1)
Metabolism refers to the chemical processes responsible for maintaining basic body functions such as breathing, cell building, and digestion. (2)

What does metabolism do?
Metabolism is broken down into two processes: anabolism and catabolism. (1)

Can metabolism be changed?

How can metabolism be changed?
Diet and exercise may change a person’s metabolic rate. (2)
1. https://www.webmd.com/fitness-exercise/what-is-metabolism
2. https://www.livestrong.com/article/401289-what-is-the-difference-between-slow-fast-metabolism/