MAHR

New phrase Maximum Average Heart Rate derived by running your Max Speed for 30 min averaging the last 20 min of the run.    That more or less what I did in the last 10K I did an AVG 161 bpm therefore my MHR is 144 BPM ... below this is my " Aerobic Zone"   where 90% of my time should be and is spent.   Above 144 it is my Anarobic Zone ..... not such a good place to hang out.

Inadvertanatluy I have been doing something right and have been training my body to burn body mass vs glycogen.

Couple of good articles ....

http://www.trailrunnermag.com/training/training-plans/1901-heart-rate-training-train-slow-race-fast

http://www.trailrunnermag.com/training/training-plans/2091-want-to-run-fast-learn-to-run-easy?utm_source=Email_marketing&utm_campaign=TR_TT_032216&cmp=1&utm_medium=HTMLEmail