
Wikipedia's definition of the word "Sport" is "an activity that is governed by a set of rules or customs and often engaged in competitively". I don't know about you but it sure sounds to me that sailing boat racing has rules and is highly competitive. As for the sweating part... sailing might be one of the only sports where having a few beers the night before and racing the next day with a hangover is the norm for some, but those true to the "sport" see it as sport!