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@Arducius
On the HR chat... Recently I've been running a bit more "just running" without trying to keep HR in low (Z1 or 2) on what are supposed to be easier runs. I'm finding my breathing is still easy - can still nose breathe and generally do 4 steps on the in breath and 4 steps on the out breath. But my HR is creeping into easier tempo range (lower Z4) despite the easy breathing, and only a small increase in perceived effort. Don't know what the point of this post is really, just an observation.