Practice seems to be stuck
Prior to adopting the Crown system, the practice function gave me a fair sample of all the various topics. Since the crown system arrived, practice has become pretty much useless as it continuously repeats the same few phrases.
True! Also no matter how many times I practice to win one bar of health, I don't. It must be some kind of glitch.
Here is a tip. Since the practice function no longer gives a fair sample of all the work, I have set up a second account and use it on the "test out" mode to go quickly through past lessons as real practice. It is not as good as truly random practice but is much better than constantly practicing how comfortable my shoes are.