Claire had a heavy breakfast early in the morning. Then she went to the gym to exercise. After the gym, Claire went to class. While exercising, the body requires a continuous supply of energy and uses up blood sugar at a faster rate. How will hormones maintain the sugar balance in the body from breakfast until Claire has lunch?

During exercise, body requires more energy, to meet energy requirement, it uses up blood sugar at a faster rate. As a result blood sugar falls. In this situation cells in the pancreas secrete hormone glucagon. Glucagon directs the liver to convert stored glycogen to sugar. This makes sugar more available in the bloodstream which causes the blood sugar to rise. Hormone Insulin and glucagon work in sync. Glucagon instructs with the liver to raise blood sugar, while insulin lowers blood sugar. In this way the body of Claire maintains the sugar balance from breakfast until lunch.