The sugar that provides instant energy is Glucose. As a monosaccharide, glucose is the simplest form of sugar and is quickly absorbed into the bloodstream following digestion. Once in the bloodstream, glucose can be transported to cells throughout the body, where it is readily utilized in cellular respiration to produce ATP, the primary energy currency of cells.
Glucose is particularly important for providing rapid energy during times of increased energy demand, such as exercise or periods of low blood sugar. Its ability to quickly elevate blood glucose levels makes it an essential nutrient for maintaining optimal bodily functions and supporting physical and cognitive performance.

While other sugars like lactose, cellulose, and maltose also provide energy upon digestion, they are not as readily absorbed or metabolized as glucose, making glucose the preferred choice for instant energy needs.