I am now a dad. All that remains is to do this Ironman thing
Edward: 3 days old, 7lbs-4oz (at birth), papa’s appetite
IM Muskoka: in 21 weeks
All of my coaching clients know how much stock I put in numbers. Heart rate in particular is a tremendously useful performance metric for both running and cycling. It tells me when an athlete is working too hard or not hard enough. It can be indicative of systemic fatigue. It can be a signpost for aerobic adaptation too, signalling a time to shift gears in the training schedule.
Here’s a heart rate versus pace plot from a recent Fartlek run.