I want to complete my super training faster
After testing it out with a friend (neighbor if you really want to know) I found it is completely random.
And also I support Astronautical's comment of:
>I find that I get them most when doing either Lv. 3 or Super Secret Training, but it's really all luck.
commented 17 minutes ago by Astronautical
Hope I helped!
-It's a secret!