Fitness
The "VO2 Max" Longevity Engine: Why Zone 5 Sprints Beat Endless Cardio for Extending Lifespan
VO2 Max is the ultimate test of cardiovascular and metabolic efficiency. It requires your lungs to pull in massive amounts of oxygen, your heart to pump that oxygenated blood forcefully, and your muscle tissue's mitochondria to rapidly extract and convert it into energy. As we age, our VO2