. . . matter of opinion. I vote for gymnastics - requires near total lifelong dedication and peak physical conditioning to even attempt some of the moves.
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I agree -gymnastics ages the body faster than any other sport.
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In my opinion I would say that swimming is right up there with gymnastics. Like gymnastics, it is one of the few sports that actually require you to use all of your muscles not just a certain group of muscles. it may not be high impact but training for swimming includes running, weights, biking, and everything else you can think of.
The hardest sport in the world is Fishing. Yes it is a sport. Search it in Google.
In my opinion the hardest sport to learn is ice hockey
sailing isn't an olympic sport its a regular stupid sport like football
As with any other sport, if it is competitive sailing then to beat your opponents, in pleasure sailing then to enjoy yourself
The sport of windsurfing combines both sailing and surfing.
The sport of sailing.
Yes. Sailing could be seen as both. Yes it depends what part of sailing you do, if you take it competitively and race then it can be a sport (as it is in the olympics) or if you just cruise then it can be seen as a sport but it is more of an activity :)
sailing
Yes
it is the hardest ice sport IN THE WORLD that is a good thing because if it were easy it would be called hockey
The America's Cup is associated with the sport of sailing.
Rugby!