Corrine Malcolm is a coach, podcaster, on-air personality, and the head of the Pro Trail Runners Association anti-doping working group. https://corrinemalcolm.com/PTRA-https://trailrunners.run/SUBSCRIBE to Research Essentials for UltrarunningBuy Training Essentials for Ultrarunning on Amazon or Audible.Information on coaching-www.trainright.comKoop’s Social MediaTwitter/Instagram- @jasonkoop