" Cortisol works more systemically than adrenaline does. It triggers the liver to make more glucose available in the bloodstream while it also blocks insulin receptors in nonessential organs and tissues so that you get all the glucose (fuel) that you need to deal with the threat. Cortisol’s work is a long-term strategy of insulin resistance, which serves to provide the brain with a sustained level of glucose. However, you don’t always have a lot of glucose floating around, so cortisol works to stockpile energy. It converts protein into glycogen and begins to store fat. If the stress is chronic, the increased body fat is stored in the abdomen. If you have a growing bulge in your midsection, it may be due to cortisol working to store energy. Unfortunately, that’s not the way you want it to be stored. It’s better to burn off such stored energy by exercise. "

― , Rewire Your Brain: Think Your Way to a Better Life