Kev5,
You would benefit greatly from getting level II. Most of my post is drawn from/modified, from that information, save the white tiger and ssss sound, which are just some alternative posibilities from five element theory. If they do breathing of the universe, that's great. Maybe you can get them doing more of level I active, and keep a record of improvements, to get them to realize it works. The movements wouldn't necessarily interest someone those ages, but if they see it really works, they might choose to practice more. They will only be home for you to help, so long. Self empowering them to care for themselves would be a great gift to give them. It might not catch on now, but they might come back later, if you plant the seeds. This has been my experience with my children, who are now adults themselves.
love,
gallen