Someone complimented Francois on his biceps mid-Ironman. While he was running. That's what happens when you stop chasing the pump and start training with actual mechanical tension. In this episode, JB breaks down how hypertrophy really works - the one driver behind muscle growth that most people completely miss, why soreness and fatigue are not the signal you think they are, and how hybrid athletes like Francois, Ben, and Matt built serious muscle while training for big endurance goals. No br...