A can of regular soda contains the equivalent of about 24 teaspoons of sugar. The oxygen demand of sugar is extremely high - to metabolize sugar requires a high level of oxygen.
Jelly and jam made from fruit does not require refrigeration - why? The sugars entrained in the jelly are unable to biodegrade with available oxygen in room air. These sugars require more than is available in room air and therefore will not deteriorate on the shelf.
Fats are made up of the same elements as those that form carbohydrates, but in fats these elements are combined in different proportions, being especially poor in oxygen. The chief fat of olive oil is olein which has the formula C57H104O6. This formula shows that this fat contains an enormous number of hydrogen atoms, a small number of oxygen atoms and a large number of carbon atoms.
Fats are spoken of as "concentrated food." They are readily oxidized, thus liberating heat.19 Given Le Chatêlier's principle, the chemical makeup of fat demands excessive oxygen - far more than muscle tissue - and may explain why overweight/obese patients experience high blood pressure, among other diseases, as the body strives toward dynamic equilibrium.