Process:  -Food is taken into the mouth -The food is chewed -Saliva mixes with the food and starts breaking it down -The chewed food travels down the esophagus to the stomach -The stomach secretes acid -Grinds and mixes the food -The food moves to the small intestine -The small intestine uses enzymes to further break down the food -The food passes into the colon -The food is expelled from the body.
 Question: What is the effect of a person is underweight on the person does more exercise.?
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