Zone 2 Cardio, Explained
Zone 2 cardio explained: what it is, why it's popular in longevity circles, and how to know if you're actually in the zone.
Fitness
Strength, cardio, VO2 max, and daily movement — the exercise that matters most, and how much you really need.
VO2 Max, Explained: Why It Matters
VO2 max explained: what it measures, why longevity researchers care about it, and how it's improved.