Because it's honestly a tie.
I've never felt more naturally gifted than I did on horseback (and was told I had that natural talent, as well).
And that day they pleaded with me to fall in for a girl who'd (sadly) had a burn-out, I had to know my script within three days, act a part and sing a solo as well, I'm still very glad I said yes.
And neither's impossible, really.
I just have to /do/ it.