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There is no doubt swimming is the hardest American sport. You use 95% of your muscles when you swim-when you run all you use is your legs. Swimming is listed the best sport for cardiovascular strength. Swimming is a very time consuming and competitive sport. I swim competitivly and I have to swim 2 hours practices for 6 days a week! That's swimming half a day every week.

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โˆ™ 2011-09-14 10:13:06
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Q: What is the hardest American sport?
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