5min @ 88% FTP
Stress points: 66
Sweet Spot Training (or SST for short) will give great bang for buck. Training at around 90 percent of your threshhold (aka the Sweet Spot) is useful because you can spend quite a bit of time there without building up undue amounts of training stress. You can do this workout as much as you'd like and watch your FTP rise over time.
*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?.