Why does one continue to breathe heavy after rigorous physical activity has stopped?
A. The lungs can't stop breathing until the heart rate slows down.
B. The kidneys require oxygen to dispose of excess lactate.
C. The body requires more oxygen to restore levels of ATP and creatine phosphate.
D. The diaphragm is waiting for its acetylcholine to run out.
E. Myosin heads need more oxygen to fully detach from actin.
Answer: C
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