Most of the Bill's ATP for this activity will be derived from the breakdown of fatty acids, through beta-oxidation in the mitochondria of cells.
ATP, also known as Adenosine Triphosphate, is a chemical that serves as the substrate for all metabolic processes in the body. This molecule can be created by a variety of techniques. Bill's workout will be powered by the combustion and breakdown of fatty acids.
Therefore, the energy required during aerobic exercises is sourced from the combustion and breakdown of fatty acids via a process known as beta-oxidation. This is one of the numerous processes involved in the generation of ATP and so occurs within the mitochondria of a cell.
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