What it looks like getting my mask on
This is what I see right before I get my mask strapped on. When it's on I can't move my head at all. I can still breathe just fine, and move my jaw. Not for people who are claustrophobic. (Thankfully I'm not). It was a favorite joke of the techs to get me strapped in and then start asking me questions. You sound like a dork when you can't move your jaw like a normal person.