Health in app vs website
I ran out of health in the app so I went online to do some practice to gain it back which was great. Got more xp and got back to working through some more exercises afterwards.
The problem is I went back to the app and I apparently had no health and could not do anything via it...
You have to wait several hours for your "health" to regenerate n the app. It's pointless and stupid
You also could go to the bottom of the app and select the heart shaped icon for a random practice session. The practice won't advance you and you can't pick what you practice, but you'll get one click of life back, for what it's worth