Megan Rapinoe, a midfielder for the U.S. soccer team playing in the Olympics, bounces a ball with her head during a training session. She has a pre-game ritual that involves listening to music on her headphones. (Associated Press)

Megan Rapinoe, a midfielder for the U.S. soccer team playing in the Olympics, bounces a ball with her head during a training session. She has a pre-game ritual that involves listening to music on her headphones. (Associated Press)