It's Impossible Not to Be Inspired by Under Armour's New Ad Campaign

Gisele may be a household name in the modeling world, but that doesn't undermine her incredible strength. She's made fitness a lifestyle and incorporates various activities in her daily routine.

As the first African-American principal dancer in the American Ballet Theatre, Misty is no stranger to breaking barriers, including mental ones. She emphasizes that having the right mind-set translates to your physical capabilities: "Find a zen space in your mind, even if it's just singing to yourself. Just pass the time and keep a steady breath."

The professional surfer is all about speed, power, and agility, and she refuses to let anyone interfere with her goals, including herself. "Strengthening my willpower has been just as important as strengthening my body," she said. "They both feed the other, and my goal is to never be satisfied. I know I can do more, so I will."

Kelley made sure that Germany wouldn't have a shot in the Women's World Cup semifinals, and her solid finish secured the US team's advancement. Now that's badass.