Oh yes... see, I assumed that was standard practice - using the preset age thresholds. I had no idea there was any other way.

My resting HR usually sits around 67-75. My avg riding HR on this Saturday ride was 155-161 (depending upon whether you ask GC or MB). They were around the same from my PowerTap data previously too.

I was riding more often last year, I believe.. but I've been doing more consistent "long" (around 100K) rides this year. I haven't all-the-sudden increased anything or tried to bust any of my speed records. The past few weeks though, I've only been riding Wednesday evenings (37 miles, plenty of hills), and Saturdays (usually 55-65 good mix of hills and flat). The HEAT has only really come on in the past 2wks.

Hard to convince myself that I'm overtraining... but hey..what do I know?