Hahaha this owns, did this today and was really nice :O!
I did this so I inhaled for like 40seconds straight, and I went up, did what you said on the steps, and I was like wtf, start working man...
And then my vision got weird and I saw black shit, few moments later I remember I opened my eyes, ppl recorded it and they said my eyes were open and my eyes got very white when I passed out, I watched that clip and I saw my legs were still moving when I was laying down there

Then a girl from my class did it once, she said she didn't do it long enough and wanted to do it a 2nd time, she's crazy
Ty for this btw

)))