What the body uses for energy Anabolism Building reactions which require the input of energy. Carbohydrate - linking glucose units together to form and store glycogen. Protein - linking amino acids together to form proteins. Lipids - combining fatty acids with glycerol to make triglycerides. Catabolism Reactions which breakdown substances to smaller units and release energy.
Anaerobic metabolism is used to produce intense power for a short period of time.
Anaerobic metabolism relies exclusively on carbohydrate as an energy source. Glucose then leaves the liver and enters the blood stream to resupply the working muscle. Aerobic Metabolism Aerobic metabolism requires oxygen, thus it primarily occurs at low and moderate rates of activity. Aerobic metabolism may use carbohydrates, triglycerides and protein for energy.