Metabolism can be increased by exercise.
Metabolism involves all the biochemical processes that keep on going continuously to maintain an organism's body in a living state. The living state is maintained by the formation and breakdown of vital molecules. The food we eat is converted into the energy which drives all the body functions. Metabolism consists of anabolism (the formation of complex compounds) and catabolism (the division of compounds to similar forms).
Metabolism refers to all the chemical reactions that are required to keep the cells and the organism alive and functioning.