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16 votes
Cardiovascular fitness exercises usually improve the _____.

skeletal system
muscular system
internal system
circulatory system

2 Answers

7 votes
circulatory system
because the circulatory system is the system with the heart and that’s what cardiovascular fitness works on
User Deddu
by
6.4k points
7 votes

Answer:

circulatory system

Step-by-step explanation:

User Ivan Chaer
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