Closed or open eyes?

[itsme777]

To all of you doing the nitrogen method. Will you close your eyes or keep them open when taking your breaths?
I have always closed my eyes when I am scared, but at the same time I want to feel sort of like I am aware of what's happening
Not sure what is better lol

 

[LittleCupcake]

I dont think it matters a whole lot as you'll be unconscious within minutes