It strengthens the heart. The heart is a muscle. Like other muscles, its performance improves when it's regularly challenged by exercise. The heart responds to exercise by becoming stronger and more efficient. Strengthening the heart muscle can help ward off heart disease
Answer:
In physical fitness, body composition is used to describe the percentages of fat, bone, water and muscle in human bodies, so the answer would be water.
Explanation:
pls mark brainliest!
All are possible physical changes
Definitely the first two [a lack of knowledge; substance use and abuse]. Depending on the situation, a lack of structured activities might hinder someone from making a correct decision, but otherwise I'd personally select answer A and answer B.
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