I am really into skateboarding on my spare time. Are you into it at all? 
I have try when i was younger, but i was not good at it>
I still do it on my spare time. I'm decent. I figured it was a dying activity, but the market for it is worth 4.8 billion dollars.
Very impressing.That is a big market.
It's definitely growing. So much so that it actually is going to represented in the 2020 Olympic Games in Tokyo.