Why do we get instant energy from glucose?

We get instant energy from glucose because it is quickly broken down into simpler molecules, providing energy for cellular functions. Glucose is a simple sugar that is easily absorbed by the body and utilized in cellular respiration. 

Once glucose enters the bloodstream, it is transported to cells, where it is converted into ATP (adenosine triphosphate), the main energy currency of the cell. The breakdown of glucose provides energy almost immediately for various bodily functions, including muscle activity, brain function, and overall metabolism. This is why glucose is often referred to as a quick source of energy.