There are times and places for tune-ups and stay-busy fights.

I do feel at times like I'm always proving myself. But I also feel that I'm proven. I've proven I can get to the mountaintop.

Did I have rough days? Days I didn't want to train? Days I thought my career would never get back off the ground and possibly be over? Absolutely.

More time than not, athletes, specifically fighters, have a 15 or 20-year career, and unfortunately, we end up right where we started when it's over. All we have is maybe a round of applause when we walk in a room - Hey, there's the champ! That's great; I want that, but I've got to have something tangible to show for it, too.

Race, what is that? Race is a competition, somebody winning and somebody losing. Blood doesn't run in races! Come on!

I have just been a bit inconsistent when I have played. That happens in football, especially when you have been out for a long period.

We're fortunate to have football on the space station.

In order to stay healthy, recover quickly, and continue building strength and agility, I've combined different types of low-impact sports circuit exercises to maximize and expand my abilities.