Why is a high temperature required for the oxidation of sugar in air, while in the human body

Why is a high temperature required for the oxidation of sugar in air, while in the human body this reaction takes place at 36.6 ° C?

There are two reasons.

First, it is not dry sugar that is oxidized in the human body, but dissolved sugar, which is hydrolyzed to form fructose and glucose. These substances are easily oxidized.

Second, oxidation in the body takes place with the help of enzymes. This is a complex, multi-stage biochemical process. Enzymes act as catalysts to lower the oxidation temperature.