Competing at the Olympics is the pinnacle of your career. Everything is amplified, and you feel so proud to represent your country. You're there with athletes from all over the world. Everyone is coming together, putting differences aside.

I myself am frustrated in just where sports are at. It's a hard thing when you're out there working every day, and you know that someone else is cheating and they may not necessarily get caught.

I've got to make sure I'm keeping weight on.

As you get older, there are going to be a few more challenges, but thankfully I'm still feeling good.

I am a big believer in visualization. I run through my races mentally so that I feel even more prepared.

I'm an athlete who's very determined and I understand sacrifice.

I focused solely on the sprints, dedicated my time there, got in the weight room, just really did everything I could to make sure I would be in the best position to run for gold.