It may not make for polite conversation, but most runners at one time or another have dealt with unpleasant intestinal rumblings, sometimes called runner's stomach, or faced other gastrointestinal running emergencies while running recreationally or competitively. The Army Public Health Center's resident nutrition experts offer a few strategies to help runners avoid unfortunate GI issues.

Source: Avoid GI issues 'cramping' your running style with these Army public health expert tips