I use my 10K / 0.9 like MC says and think it works fine (HRmax 195). But, I find that early in a training cycle I can get it up (HR that is :blush<img alt="smile.gif" src="http://files.kickrunners.com/smilies/smile.gif"> but once I'm into big mileage it's hard to get it up there. Like today I was doing 1000m repeats at a bit slower than 5 K effort and the HRmax was only 171 (avg pace 7:06). In December, I ran a whole half marathon with the AHR 171 (178 max) (avg pace 7:36). Am I a wimp or something?<br>
This all makes me question HRmax, is it a moving target?
This all makes me question HRmax, is it a moving target?
