Hi folks

I've got a question about heart rate.
So I started up my own construction company earlier this year and have been super busy, I work alone at this stage and it's leaving me rather knackered for doing any training, do any of you track your heart rate religiously and then decide on the intensity you might train at given the data received??

I use a garmin 935 and have been tracking my sleep patterns, but maybe I should consider a chest strap to record heart rate variability as well??