How soon depends on the quality of embalming, burial container, burial location (such as mausoleum or in-ground). One funeral director I know exhumed a body 5 years after it was buried.
Definition: Aerobic metabolism is the creation of energy through the combustion of carbohydrates and fats in the presence of oxygen. The only byproducts are carbon dioxide and water, which your body disposes of by breathing and sweating.
Aerobic Exercise Metabolism. During aerobic exercise, your body has a steady supply of oxygen to produce ATP, giving your body a tremendous energy-yielding capacity. Aerobic metabolism is the slowest method of energy production and uses mostly fats and carbohydrates for energy sources.