Eating foods containing carbs put glucose into the blood from the small intestine
Exercise and the normal metabolism of cells removes glucose from the blood
Excess glusoe is converted to insoluble glycogen in the liver. It's then stored in the liver and muscles
The level of glucose in the blood must be kept steady to prevent damage to the body. Changes in blood glucose r monitored and controlled by the pancreas using the hormones insulin and glucagon. It's a negative feedback mechanism