there is a big difference between going all out on a turbo for 90min (even for 45min!) and JRA for 3 hours!
🙂 my point really being was that as turbos have improved, better road simulation, app controlled resistance, the virtual experience getting so much better, that if your plan calls for a 3 hr road ride then if you are so inclined you can get something that’s a reasonable equivalent on the turbo that’s not too unpalatable. Whereas previously turbos did tend to mean shorter sessions with hard intervals.
I even know some people who have taken up cycling and ride regularly… but have never actually ridden outdoors. Quite bizarre 🙂