Why does the body continue to work after exercise has finished? The body uses carbon dioxide to bring itself back to a normal, resting state.
The body takes one hour to bring itself back to a resting heart rate.
The body uses oxygen to bring itself back to a normal, resting state.
The body takes one hour to bring itself back to a normal blood pressure range.

c

Explanation:

The body uses oxygen to bring itself back to normal, resting state

The body uses oxygen to bring itself back to a normal,resting state.

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explanation:

i think it would be b the increase in body temp