Karl Meltzer is an ultrarunner and running coach who’s completed 89 Ultramarathons in 96 starts. He holds the record for most 100-mile trail race wins (35) and the most 100-mile
Dr. Jason Karp is an internationally-recognized running and fitness expert and the owner of Run-Fit. He’s the 2011 IDEA National Personal Trainer of the Year and 2014 recipient of the
Ben Greenfield is an Ironman triathlete, Spartan racer, coach, speaker, former bodybuilder and author of the New York Times Bestseller Beyond Training: Mastering Endurance, Health and Life. In 2008, Greenfield
Nick Mauro is a Manhattan-based writer, consultant, personal trainer, and nutritionist. He writes at thewrongsideof.com, consults for the firm PwC, and helps people achieve their fitness and nutrition goals by
Alexander Ruben is a former college athlete who’s spent the last year building his meditation habit on Coach.me. He and his brother created HIITAcademy from HomeHiitness, which offers free HIIT
