This teen made a huge splash when she won four gold medals at her first Olympics in 2012. Besides her success in the pool, she's known for her big smile and having fun.
Missy tried lots of sports on her way to becoming a great swimmer. She took part in basketball, soccer, volleyball, tennis, gymnastics, and skating before she jumped in the pool.
It's totally OK to try lots of different sports and ways to move. The important thing is to find activities that are fun for you and to get moving for at least 60 minutes a day.