In the vary late stages of a marathon when speed is increased to finish, which macronutrient usage is enhanced to become the primary energy source?

In the vary late stages of a marathon when speed is increased to finish, which macronutrient usage is enhanced to become the primary energy source?

In the vary late stages of a marathon when speed is increased to finish, which macronutrient usage is enhanced to become the primary energy source?


a. protein

b. water

c. vitamins

d. fat

e. carbohydrate


Answer: e. carbohydrate


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