Me at 5:30 AM -- with some youngsters!!!! Bit warm and humid here this morning. Got out before sunrise at 4:45AM- a bunch of parkrun friends were doing an extra -curricular run at the park , but they are too quick for me, so I decided that I would run the 6K to the park from home and then do 4k extra when I got there - arrived just in time to say "hello" as they zoomed past!!
I am doing nearly all of my runs as run/walk at the moment. I aim to keep my HR down below 70% of my heart rate reserve HRR . Using 30/30 ratio, I run down all hills - and use run/walk uphill until my HR goes over 70% of HRR - and I walk uphill from then onwards until the next downhill or flat bit . So - this morning I averaged a HR of exactly 130 over the 10K at 7:40 mins per K. This is a good "easy" pace for me to build up a bit of mileage.
One thing this HR training does - especially in this hot humid weather, is show you clearly how high your HR goes and how quickly it goes there when it is also struggling to cool you down at the same time!!!