I don't know if anyone does this but I personally do Dragon Boating. A water sport that seems to be growing. I live in the west coast where the conditions are always nice where I can paddle all year around. It's very intense but it's not very well known in certain parts of the world (more interior of any place). There's also a very well known festival in Vancouver, Canada named "Rio Tinto Alcan". It's a popular North American festival among dragon boaters.
I am trying out for Worlds competition personally and would like to know what you guys have tried to reach the top of the top. If you can give dragon boating a try go for it! It may or may not be your thing.
*back to watching some anime*