Earlier quoted context omitted.
Well your first link reads like media extrapolating a nationwide trend from next to nothing, and only really talks about the danger of doing it to yourself. The second link doesn't mention timing except the standard 'five minutes' thing, while holding your breath for two minutes is probably going to lead to somewhere between 60 and 0 seconds of oxygen deprivation. So I'm still unsure where the risk of dying comes fro…
> ask somebody physically stronger to "help" you to keep the plastic bag over you head to make sure that you make the time
As far as I can tell most of the danger comes from the possibility of having someone hold you still while you panic, and that is not what I generally consider deadly.
Really not sure if I'm missing something...