I've worked a few odd jobs during my travels, and they all helped me with my training. You should take up a part-time job during your World Tour, as well.
Something in the way while you're walking through the city? Here's an easy solution: send it flyin' with a Master Action! Mm-mm-mmm... It's the little pleasures in life.
Did you know you can play classic games at the Battle Hub Game Center? It's true! Cassette tapes and cartridges might be old...but they're still hecka rad.
Where's your face, dingus? Get your butt to the avatar creator and sort yourself out! Crying shame we can't fix that attitude of yours while we're at it.