
Learn to build training around the athlete’s physiology, not around generic zones, thresholds, and workouts.

The business case for labs, longevity clinics, gyms, personal trainers and coaching businesses: the workflow, the protocols and equipment, the upsell path, and the numbers behind the return on investment.
Sebastian Weber builds a complete metabolic profile from a conventional lactate test: VO₂max, VLamax, FatMax and MLSS. He then changes single physiological markers to project performance, and turns the result into a training strategy.
Both HIIT and Norwegian 4x4 improve VO2max -- but the glycolytic stimulus they produce is entirely different, with opposite effects depending on the athlete's metabolic profile.