My indoor and outdoor numbers vary by almost nothing. In many cases I can definitely drop more power indoors than out.
I've gripped and ripped 20 minute tests and set zones for longer than most folks in this forum have been riding bikes. I have kits older than some of you. Testing straight 20 minutes and setting zones from there doesn't seem to have impacted my results over the years. To tmonks point, it's about setting zones for workouts. Test. Set your zones. Adjust accordingly as you succeed or fail at your workouts. It's winter, but unless you're calculating TSS for the hand wringing you're ******g up your CTL and recovery.
Last edited by gsteinb; 02-25-21 at 11:48 AM.