4 foods runners should eat to support their immune systems

Marathoner and registered dietitian Rachel Hannah gives her top food picks for maintaining a healthy immune system

Running and COVID-19: Why runners should take a vitamin D supplement

New research is showing a link between vitamin D deficiency and severe COVID-19 infections. What does this mean for runners?

Kilian Jornet signs with Maurten as nutrition sponsor

The Spanish ultrarunner and climber announced his latest partnership over the weekend