Ben Greenfield: Mark Sisson at 72: I Chased VO2 Max and Lost 32 Pounds of Muscle — Here’s What Actually Works
B Ben Greenfield Video Summary · May 14, 2026 View Full Protocol → Key Takeaways VO2 max training: Prioritize zone 2 cardio (60-70% max heart rate) for 45-90 mins, 3-5x/week to build aerobic base without muscle loss Muscle retention: Lift heavy weights 2-3x/week (focus on compound lifts) and consume 1g protein per pound of body…
