Health and lingots???
I've been doing Duo for 3 yrs. I've seen the changes in the program and like most of them. I'm not so sure about the new ones! I've heard some complain about "health" What is it? I don't seem to have it on my program. I hope Duo straightens out the latest changes. Also, WHAT are the lingots good for now? I've got 1700 of them!
usage of them was explained here
Gems and Health FAQ