Ironman Doctor Shares Workout Secrets

A longevity physician who completed 15 Ironman races shares his training routine emphasizing "run-commuting" to embed cardio into daily activities. His approach blends endurance runs, intervals, strength work, and cross-training while prioritizing consistency over intensity and giving rest equal priority to hard workouts.

An Ironman triathlon is a grueling one-day event comprising a 2.4-mile swim, a 112-mile bicycle ride, and a 26.2-mile run. Competitors have a strict time limit, often around 17 hours, to complete the total 140.6-mile distance. The physician, Dr. Jordan Metzl, starts his day around 5:30 a.m. with a 30 to 45-minute high-intensity interval training (HIIT) or strength workout. He often takes dumbbells to a nearby park for these sessions, incorporating exercises like hill sprints and explosive plyometric jump squats. His "run-commute" involves walking about a mile and a half to his office and then running a deliberately lengthened route home. By running up through Central Park, he adds 4 to 5 miles to his daily activity. Weekends are reserved for more intensive training sessions. Saturdays typically involve a long endurance run of an hour-and-a-half to two hours, which he views as crucial for both physical and mental training. Sundays are for lower-intensity cross-training, such as swimming. Metzl is a proponent of focusing on the fundamental pillars of longevity: exercise, diet, good sleep, and social connection. He cautions against the hype around expensive and often unvalidated trends in the longevity space. To foster a sense of community around fitness, he developed the "IronStrength" program, a group workout designed specifically for runners and triathletes. He personally leads dozens of these classes every year.

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