OK, one more comment as it see this thread has run it's course anyway and it's just you and I chatting. Odd, as we are only about 20 miles apart right now and I could just go over to your office and accomplish the same thing. :) I agree for some people HR can be an extremely variable data point. But as anything it can be very individual specific. I don't have any meaningful HR variability as my HR graph shows. I am likely an outlier in that respect, I have also never had to pee during my 6 Ironman races, and because I am so in tune with what my HR does under varied conditions and situations, it works perfectly for me. And I have the added advantage I can use it for bike/run and have a single data point to watch. Makes life easy. I would disagree that a PM would improve my performance, it might but it also might not, it's too presumptive to say it would. I ran 3:26 in Kona in 2007 off a 5:03 bike but I was 39 and was injury free for 18 months heading into it.
I stole this from another thread, credit to Brett "Texafornia" Blankner:
Power is the work. HR is your body's reaction to the work (and fuel, hydration, heat, and rest).
Power is you at the museum. HR is a tour guide telling what the hell you are looking at.
Power without HR is like arguing with somebody over a play in football without actually knowing the rules of the game - You might be right, but you have no idea why.
-Of course it's 'effing hard, it's IRONMAN!
Team ZOOT
ZOOT, QR, Garmin, HED Wheels, Zealios, FormSwim, Precision Hydration, Rudy Project
I stole this from another thread, credit to Brett "Texafornia" Blankner:
Power is the work. HR is your body's reaction to the work (and fuel, hydration, heat, and rest).
Power is you at the museum. HR is a tour guide telling what the hell you are looking at.
Power without HR is like arguing with somebody over a play in football without actually knowing the rules of the game - You might be right, but you have no idea why.
-Of course it's 'effing hard, it's IRONMAN!
Team ZOOT
ZOOT, QR, Garmin, HED Wheels, Zealios, FormSwim, Precision Hydration, Rudy Project