I have the opportunity to go do 5 days of riding next week in CO, with a lot of riding above 7000’ and hitting plenty of 10k, and of course Mt Evans too (yikes!). Seeing that I live at 1000’, I know my power is going to be crippled quite a bit. Are HR zones valid at all? I did search and looked at previous comments, and did read Jakes blog post. Thanks for any info.
Also, if I kinda wanted to have accurate tss calculation, I’m guessing should drop my ftp in TP by 30%?