More than 200 countries sent over 10,000 athletes to compete in the Rio Summer Olympics. As they come to a close this week, I can’t help but get excited about these amazing athletes and see what motivates them.

The first U.S. Olympian we will look at comes from the from the sport of fencing (Star Wars fans are especially excited for this sport as it mirrors light saber fighting!).

Ibtihaj Muhammad made history as the first U.S. athlete to compete at the Olympics in a hijab. See her on Ellen here.

“In a sport like fencing, you’re your own biggest opponent,” she said. “If you can control yourself and execute the actions you want in a way you want, you’ll be successful.”

Claressa Shields was the first African-American woman to win a boxing gold medal at the 2012 London Olympics. She is pumped and in Rio to try to defend her title. Check out NBC’s piece on her “From Flint to Rio“.

Being humble is, even though you believe in yourself and you know what you’re capable of, you still work 10 times harder than your opponent to make sure you get the output you want.”

This year, gymnastics and Simone Biles go hand-in-hand. Her domination in these Olympians goes unmatched. (Watch her close to perfect Vault.) Now, as you can imagine Simone deals with some stress. When asked how she handles her stress:

I tune it all out because if I let other people’s stress get to me, then I stress myself out more than I need.”

This piece wouldn’t be complete if I didn’t mention Michael Phelps. His 28 medals make him the most decorated Olympian of all time. Here he sits down and talks with NBC’s Bob Costas.

“Where I am now, is exactly where I want to finish my career.”