The Best Zone 2 Video

If you’re not interested in mitochondria development or lactate threshold, feel free to keep scrolling. Today’s video dives deep into the details of Zone 2 training.

Steve does a fantastic job breaking down the different ways to approach this type of training. He explains how Zone 2 isn’t a strict on-off switch—there’s a wide range of effectiveness because multiple systems are working together simultaneously. Your Zone 2 numbers aren’t set in stone; they’re just estimates to help you train within an effective range.

A few years ago, I wanted the most precise training zones possible, so I went to an exercise physiology lab for blood lactate testing. I ran hard on a treadmill while getting my finger pricked every couple of minutes. But even that testing wasn’t as accurate as I had hoped (16:50 of the video).

At the end of the day, if you want to build endurance, the key is logging as much quality, low-effort time as possible. Within those easy efforts, it’s more important to vary your volume, intensity, and frequency than to stress over whether you're in Zone 1, 2, or 3.

Enjoy!

Justin Miner
@justinminergain