Shane has to clean the garage after school. This can help him meet his goal of 60 minutes of moderate to vigorous physical activ
ity each day if a. he finishes the task fast enough to go out afterward
b. he works hard enough to keep his heart beating fast
c. he gets help from his friends to finish the job
d. he turns off the fan so he is working in a hotter environment
b. he works hard enough to keep his heart beating fast
Explanation:
Moderate or vigorous physical activity is synonymous with moving muscles. The more muscle fibers strive to accomplish a task, the more they consume the oxygen brought into the bloodstream. This forces the lungs to work at a fast pace, as they are responsible for oxygenation. The heart also speeds up because it needs to pump blood more vigorously. This is why, while exercising, your heart rate and breathing rate must increase.
With that, we can say that for Shane to use his garage cleaning as a vigorous or moderate physical activity he will have to move to the point of keeping his heart beating fast.
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