I tried to search the forum but couldn’t find if this has been already covered previously.
I’m currently on the 18W SS plan. After the initial test and setting up the power and HR zones, I’ve noticed during the intervals there is quite a bit of discrepancy in the Zones. My HR is always lower i.e. if I’m riding in sweetspot according to Power, my HR stays in lower Tempo or even high Z2. If I go up to HR SS zone, I need to push FTP and even over it
Should I focus on riding purely according to power and let the HR be what is, or should I modify the zones? and if so, which one, HR or W?