1. Is it advisable to wear them/put them up all the time, or would this be too much? Or, in other words, does the „occult immune system“ need some training, and constant „disinfection“ isn‘t healthy either?

Working out the same question! I'm currently wearing it only when I expect negative interactions. There's a lot of that currently, so I'm wearing it a lot. So far it seems to have a beneficial effect.

Curious to learn what your experience will bring!