Question about holding in vapor?

[ClarkCSM]

Hey, I'm sitting in class and I'm holding in my vapor until nothing comes out just so I don't cause any controversy, is this bad for me health wise?

Thanks in advance.

 

[Avid]

I'm not a doctor but I'd assume holding anything in your lungs besides oxygen is probably not a great idea. I don't think it's exceptionally harmful, but I would avoid doing it if possible.

JMO