During prolonged,intense exercise,most energy used by the body is derived from:
A)fatty acids.
B)creatine phosphate.
C)glucose.
D)protein.

Question

Quizplus · Accepted Answer

During prolonged, intense exercise, the body's primary source of energy is glucose, which comes from carbohydrates in the diet and is stored in the muscles and liver as glycogen. Fatty acids and creatine phosphate can also be used for energy, but not as efficiently or quickly as glucose. Protein is not a preferred source of energy and is typically only used as a last resort when other sources are depleted.

During Prolonged,intense Exercise,most Energy Used by the Body Is Derived