These hormones cause huge effects on the regulation of blood sugar by stimulating glucose-dependent insulin secretion. Insulin is a hormone that promotes sugar uptake by the cells, stores sugar as glycogen, promotes the building of fat, and signals the body to build skeletal muscle. In addition, GIP and GLP-1 inhibits glucagon release (which slows down the release of sugar into the blood so that you burn more fat), slows down gastric emptying (makes you feel full), and lowers the desire for food intake (because you feel full).