How does exercise help the cardiovascular system? O It weakens the heart. O It slows the heartbeat. O It changes hormone levels. O It increases the oxygen in the blood.

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asked Dec 16, 2023 6.4k views

3 votes

How does exercise help the cardiovascular system?

O It weakens the heart.

O It slows the heartbeat.

O It changes hormone levels.

O It increases the oxygen in the blood.

Health
high-school

Californian asked

by Californian

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1 Answer

6 votes

It would be option 4

NicoD answered Dec 19, 2023

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