Training, training, training.

[Mid Life Crisis Marathon Man]

An interesting post. Your idea of using working HR got me thinking... To date I've been using my HRM more as an indicator of fitness by analysing my average HR versus time and distance. I use what I think is a useful performance index which is calculated: (Ave HR * time) / distance. This gives a number which gives a pretty rough and ready, but (I think) usefully objective indicator of any run. The lower the number, the better the performance. I started using the HRM in the first place because I could never work out why I felt good about a bad run and vice versa about a good run, so I was in need of some sort of objective measurement.

I think it's helpful because you can compare HR and time over different distances... provided the terrain and conditions are similar of course.

What do you think? Other than that I should stop over-analysing everything and just run the sodding miles...?