I'll have a read, thanks. I've been trying to lower my HR when steady-state jogging also & variability came up a lot in my light reading on techniques for doin

I'll have a read, thanks. I've been trying to lower my HR when steady-state jogging also & variability came up a lot in my light reading on techniques for doing that also, but the articles did tend to feel a lot more at the quackery end of the scale