Michael and Mark speak with Andy Dorais, an E.R. physician who has represented the U.S. in the Ski Mountaineering World Championships, holds the fastest known time on the White Rim Trail near Moab, and once traversed the summits of the SLC skyline: 65 miles and 30,000′ of elevation gain in a single push. Joining them is Brian Harder a physician assistant and endurance athlete who appeared on episode 4 to cover the topic of recovery from injury—both blew their ACLs last winter—and during the last hour of the podcast to discuss hip replacement and the aging athlete with Mark.