Health
Zone 2 Training for Longevity: What 2026 Research Shows
Zone 2 cardio has been called the longevity exercise. But a 2025 narrative review challenges whether it's actually optimal. Here's what the latest evidence says.
Dash Hartwell·
Vo2 Max
Health
VO2 Max Training: December Indoor Protocol
VO2 max is the single strongest predictor of all-cause mortality. Here's the research-backed indoor training protocol to improve yours this winter.
Dash Hartwell·
Health
Fitness vs. Weight Loss: Why Cardiorespiratory Fitness Matters More for Longevity
The largest study yet on fitness, weight, and longevity confirms: being aerobically fit cuts premature death risk by half, even for those with obesity.
Dash Hartwell·
Health
Zone 2 Cardio: How to Find Your Metabolic Sweet Spot
Elite athletes spend 80% of their training in Zone 2 for good reason. Learn why the 'easy' pace builds the metabolic engine that powers everything else.
Dash Hartwell·
Health
The Workout That Reverses Aging: VO2 Max Training
VO2 max is the strongest predictor of all-cause mortality, and high-intensity intervals can improve it at any age.
Dash Hartwell·