The previous post covered what Zone 2 training actually does physiologically. This one is narrower and more practical: how to build weekly mileage without undoing that work through injury — which, for most recreational runners, is the actual failure mode…
Heart Rate Zones, Properly Explained: Why Zone 2 Builds the Aerobic Base That Everything Else Depends On
Every few months a new device or app tells recreational runners the same thing: you’re training too hard, too often, and it’s quietly working against you. It sounds like clickbait, but it’s one of the more robustly supported claims in…