Integrating High-Intensity, Part I: Polarized Training
Achieving peak performance/health is a balancing act. Among other things, it requires balancing mostly low-intensity training with a prudent
HIIT
3 articles
The Science of Zone 2 Training
Low-intensity training drives adaptations that improve health. It's that simple. But walking across the room builds health. Virtually anything that doesn't involve sitting still is a kind of exercise. Why the emphasis on low-intensity training? What, to be blunt, is the scientific justification?
Zone 2 Training: Part 2—The Myths
Anything useful in health & fitness eventually gets coopted and surrounded by myths. Zone 2 training is no different. It has become popularized, misunderstood, and over-complicated, all the while receiving nonsensical criticisms, mostly for things it isn't.