The main source of energy in your body is cholecystokinin (CCK).

Name: The main source of energy in your body is cholecystokinin (CCK).
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Quizplus · Accepted Answer

Cholecystokinin (CCK) is actually a hormone produced in the small intestine that stimulates the release of digestive enzymes from the pancreas and the gallbladder. The main source of energy in the body is glucose, which is derived from carbohydrates and stored in the form of glycogen in the liver and muscles.

The Main Source of Energy in Your Body Is Cholecystokinin