Question

How does the body use carbohydrates, fats and proteins?

Answer 1

There is your answer,

Broken down into amino acids, used to build muscle and to make other proteins that are essential for the body to function. Broken down into fatty acids to make cell linings and hormones. Extra is stored in fat cells. After a meal, the blood sugar (glucose) level rises as carbohydrate is digested.

I hope it will help you.