Originally Posted by
revchuck
Nope. Z1 is less than 55% of FTP. If you're riding slowly enough to feel guilty, you're probably in Z1.

Z2 is your normal "just riding around" pace, 55-75% of FTP. For a recovery ride, you want to NOT create a training stress.
Edit: Recovery ride HR is <68% of FTHR. For context, my FTHR is ~160 bpm (I'm 62, and it decreases as you age), and I keep my recovery rides in the ballpark of 100 bpm.
Oh ok, I was just looking it up. I got it mixed up with heart rate zones. Just got a 500 bundle in the mail so I'll be using heart rates to do some workouts as a powermeter is still too much of an investment.