Help Would I be able to wake up from an alarm if I fail partial hanging?

[Varenkyo]

Question is self-explanatory. I'm curious to know if I theoretically pass out from partial suspension- will I wake up from an alarm or find myself in a hospital bed?
A bit of a stupid question but I figuired it's better to ask than just keep guessing until it's too late.

 

[UKscotty]

You can't wake up from hanging, you'd be brain dead in a couple of minutes. The brain dies fast without oxygen.

I'm not sure why people keep messing about trying hanging and practicing. You can be out cold in under 10 seconds and there is no waking yourself up or stopping.