I spoke with Dave Harris last night about things and we decided to try the TT again today. I had already taken off work today so I got some good sleep, a good breakfast, and hung out with the pups until things warmed up and then went back out to Deckers. I did a 45 minute warm up and started up the canyon. This time my heart rate was pretty consistent in the low 170's. When I turned the monitor on it was reading 156 and it took about a minute to get near 170. There were a few times I saw upper 177 but no higher and I would not have been able to have a conversation with anyone so I was working pretty hard. I kept a pretty close eye on the numbers and, at one point, they dropped to 92. I looked and did a see a telephone line about 100 yards away. I adjusted the strap and it came back to 173 pretty quickly. Maybe the numbers were off last time because of some interference? Maybe I'm just getting into badass shape very quickly? What's interesting is that I actually covered more mileage (4.9 miles total) this time at a much lower heart rate (on an uphill climb at about 8000').
After plugging in the numbers this time, it's no wonder why I'm tired this week. My Zone 3 rides so far have been dead in the middle of Zone 4. I know it's possible for heart rate to fluctuate based upon time of day, caffeine intake, stress, temperature, all kinds of things but I think these are much more appropriate numbers for me. Tomorrow is a 3 hour Zone 3 ride so I'm anxious to see if it feels any better.
Thanks for the help Dave. I was definitely frustrated when we spoke.