Originally Posted by
Hermes
When I started training with power in 2008, I was doing the same thing.
Same. That, to me, was the biggest benefit of a power meter: showing the incredible amounts of time I wasn't actually putting out much power when I thought I was "training". A four hour pre-powermeter ride would probably equate to a three hour ride today in terms of kJs/ work performed. Now I typically have less than 10% Z1 time versus 30-40% when I first started checking it with the PM.