I love track and field, but I also know the day will come when I will have to do something else.

When I started competing, you had to have your coach there. Now you can be coached from a home office via Skype or video. That's not the same as having them on the field with you.

My passion for giving is no different than yours. I give because it's in my heart to give. I give because I was taught to give at a very early age. This is how I developed my passion for giving.

I was diagnosed with asthma when I was 18 during my freshman year at UCLA. I refused to accept it - and I hid it from my coaches and teammates. But ignoring my problem didn't make it go away.

We live in a world where sports have the potential to bridge the gap between racism, sexism and discrimination. The 2012 Olympic Games was a great start but hopefully what these games taught us is that if women are given an opportunity on an equal playing field the possibilities for women are endless.

My denial and irresponsible attitude about asthma put me at great risk and caused me so much needless suffering. My hope is that the kids I talk to learn to open up about their asthma, become educated about their condition, and seek help.

I'm always challenged by someone.