Here's why:
* Glucose is a simple sugar. It's readily available in your bloodstream and easily broken down by cells.
* Cellular Respiration: The process of breaking down glucose for energy is called cellular respiration. It happens in the mitochondria of your cells.
* ATP Production: The breakdown of glucose produces ATP (adenosine triphosphate), which is the primary energy currency of your cells.
While other carbon-based molecules like fats and proteins can also be used for energy, they are typically broken down after glucose is depleted. Glucose is the primary and most readily available source of energy for your cells.