Seven years ago, when I started free soloing long, hard routes in Yosemite - climbing without a rope, gear or a partner - I did it because it seemed like the purest, most elegant way to scale big walls. Climbing, especially soloing, felt like a grand adventure, but I never dreamed it could be a profession.

There's a constant tension in climbing, and really all exploration, between pushing yourself into the unknown but trying not to push too far. The best any of us can do is to tread that line carefully.

Yosemite has the most impressive and accessible granite big walls in the world. The rock is amazing. And because of that, it's been the mecca for climbing in the U.S. - and the world to a large degree - for all of climbing history. It's the place to test yourself against the historic routes of the past.

I'm sponsored by the solar company Goal Zero, and they were gracious enough to install panels on my van and a nice battery system for the inside. I have lights and a fridge inside the van. And of course I had panels installed on my mom's house.

There are times where I am trying to make the big play before I even catch the football.

We try really hard to avoid those conventional experiences, these adrenaline rush, anger, competition, violence. We intentionally avoid that. We try to create a game that's serene and tranquil and filled with love.

Everywhere I've gone, basketball-wise, I've been the underdog and underrated guy.

IndyCar is what it is and in the back of our minds we all know it is a dangerous sport.