Athlete perform during the men's elite sprint distance at the Hamburg Wasser ITU World Triathlon Championships 2017 on July 15, 2017 in Hamburg, Germany. | Alexander Koerner/Getty Images for WTS

Gut Bacteria From Elite Athletes Could Soon Become a Probiotic Supplement

The beneficial bugs that make up athletes’ intestinal microbiome might provide a natural performance-enhancing boost, say Harvard researchers.