Method Self induced Syncope+hanging?

[Reflection]

Can one set up full suspension hanging in a way that makes it so that you painlessly lose consciousness before the actual hanging happens?

Self induced syncope is easy to do and is painless, so I've been thinking about a way to achieve this.

 

[babouflo201223]

It's a goog question. Please let me know how to do, and I would be also interested in how you manage to reach unconsciousness by yourself (sorry for my bad english). Thank you !