when I swam in high school for the Y travel team I was there a lot of the time when the synchronized team was down in the diving well training. it's a fricken work out I can tell you. our coach would send us over to their coach when we messed up or got caught bottom walking. it's a hell of a lot harder than you can even imagine. I will give it my vote of approval. It's sure as hell more of a sport than fricken NASCAR.