A.) Mononucleosis
Mono s<span>preads by saliva.</span>
The first test is the heart
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It would be a Mental Task.
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Everything you do has an affect on you, whether it be positive or negative
The answer would be : C. Increase the intensity of cardiovascular workouts
cardiovascular workouts are the best one to increase the target heart rate. By increasing it's intensity, Xavier will increase his heart rate to the point where he managed to achieve his target
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