In this way, anabolism and catabolism exist in balance with each other and are the ying and the yang of metabolism.
anabolism requires the input of energy, in the form of food calories, and is the process by which the body stores energy.
anabolism a·nab·o·lism (ə-nāb'ə-lĭz'əm)
The phase of metabolism in which simple substances are synthesized into the complex materials of living tissue.
The phase of metabolism in which complex molecules, such as the proteins and fats that make up body tissue, are formed from simpler ones. Compare catabolism.
Note: Athletes often attempt to improve their performance by speeding up this molecule-building process through the use of drugs called anabolic steroids, despite the potential health risks involved. This use is outlawed in many athletic competitions, such as the Olympic Games.