Duration: 29m 45s
Yellow days are a great day to keep the duration at a normal level, but perhaps back off the intensity of your sessions. I like the 'go off of effort' approach on these days because sometimes you can feel pretty good and other days you feel off. Thus, keeping it effort focused allows you to be flexible for anything and everything.
*From Zwift 1.49 (early October 2023), Zwift has decided to reorganize its workout library into new collections. Use More workouts like this to find identical workouts in new workout collections or training plans in Zwift. Workouts that are no longer available in Zwift can be downloaded from the official Zwift forum. See more info here: FAQ: How do I obtain and use old Zwift workouts that are no longer available in Zwift?.