Yes, these are springing up in the more major cities; Europe's ahead of us. I think it's a great idea. We're sooooooo deficient in O2. I had to leave San Diego because of the lack of it.
It's better if you're near the ocean, trees, mountains, etc., but still hard to get enough. And if affects "everything" in our body; just like good ole clean water!!
LIGHT**********carole