So i would answer this normally but this is not a normal question <span />
True. If you think about it it's the same when they say if your pregnant or have a weak heart don't ride this ride. If you have health issues you generally don't want to risk increasing it and exercise is a big way to increase it. Partly because of the fact that it gets your heart rate up.
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As feud is to quarrel. The first pair are synonyms that mean mostly the same thing. The trick to questions like that is to figure out the relationship between the given pair to find the best matching pair.