Endogenous Fat: Burning Fat

Between meals, adipose tissue releases fatty acids, that bind to albumin and supply the body with energy. Glycerol is also released. It is used by the liver to make glucose. The liver and muscles convert their stored glycogen to glucose for immediate energy. Depending on the abundance of fat, the liver may continue releasing VLDLs to supply fat to the body.

Within the liver, glycogen and glycerol are converted to glucose, which leaves the liver as blood glucose. The liver also contains triglyceride. Within adipose tissue, triglyceride gets converted to fatty acid and glycerol. Glycerol then enters the liver and fatty acid becomes circulating fatty acid, which travels back to the liver.
Burning fat: the processes of the liver and adipose tissue