imo, swimmin will build your endurance so much faster
but swimmin hits your legs, abs, and shoulders and defines those muscles
i'd choose swimmin over runnin any day b/c you can do it so many ways and for it not to be borin
Sulaiman Nyambui, the greatest college runner ever, prepared for the NCAA's one year running (not swimming) in the pool due to an injury. He won everything he trained for.....
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