Tennis champion Monica Seles is opening up about her battle with a binge-eating disorder -- something she's dealt with for the past 10 years.

 

"When I was in stressful situations on the tennis court or in my personal life, I would start my binge eating. ... I would do it alone because I was so ashamed," Seles told ABC.

Those emotions are typical for people with the disorder, according to the National Eating Disorders Association. The organization says people often feel out of control or guilty when binge eating.

The difference between a binge-eating disorder and bulimia is that those with the latter purge food after eating. People with a binge-eating disorder don't exercise or throw up after binging.