One of the criteria is completing 8 structured ZA workouts. If I do the same on 2 workouts, 4 times each would this count toward completing 8 structured ZA workouts to complete 2019 ZA?
In order to graduate Zwift Academy, you will need to complete eight different workouts. Of course, if you ever want to double up, you’ll definitely gain more fitness, just not credits.
What if we were to repeat a workout to get more stars on the second try, will we get to keep those extra stars?
If you are “in the competition”, your best workout will count. I generally do a walk-through to see what lies ahead and read the instructions, then I ride it full gas. I will repeat sometimes but skip the warm up (just hit tab button)