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Aerobic respiration is the process most living things undergo to use food energy. Here we will investigate the definition, the steps of the process, what goes in and what comes out of the process, and the chemical formula. Get ready to breathe!
Aerobic and anaerobic refer to the source of energy being used by your muscles during the activity. In the case of anaerobic -- the absence of oxygen -- the main energy source is phosphocreatine and glycogen. Aerobic actually means requiring oxygen.