I am doing the climb interval training and I noticed two things yesterday.
I did not go into the ‘red’ like I used to. somehow I can’t or won’t go above 185 as previous I maxed out at 192 -193 quite quickly. now it takes longer to get in the higher heart rates, but also it feels like a ‘governor’ or limiter is on my heart rate.
along the lines I find that the ‘zing’ is out of my climbing. I can go longer both sitting and standing in my perception, but not as quick in the acceleration. like my body tells me not to go in the red.
before you state the obvious, I asked my wife if I have gotten smarter over the years and in particular the last months since I am doing a training plan, and the answer was NO.