Taramafor I've always thought about a leash around the neck being slowly tugged at (and loosened).
Whatever method you go with just be sure to time it. I like to get people to hold their breath as long as they can think. Even online. Just to see if they'll resist the urge to breath the moment they feel/think Read more… they need too. Some last longer then others. Those are the ones that actually try.
There's a few factors at play. How much oxygen is already in the body (it's not the same as drowning), how long you're holding your breath for. How healthy/unhealthy your lungs are. Which is going to factor in age. It all has to be taken into account.

TheBookCollector Just to add to this, people who are considering choaking/strangulation should read up on the case od Sophie.Moss.and Sam Pybus to understand the dangers and consequences of such action.
While Pybus got 4 years, the sentance is being reviewed and may increase. Just to add to this, people who are considering choaking/strangulation should read up on the case od Sophie.Moss.and Sam Pybus to understand the dangers and consequences of such action.
While Pybus got 4 years, the sentance is being reviewed and may increase.

CumbriaLeather Thank you for your considered responses. I'm most grateful. People within our community need to not only be aware that the act of non-fatal strangulation is now a criminal offence, both in the UK and 30 states of USA, but if they go on to do it, they could cause ***ness within 10 seconds and that Read more… they could well, by their action, have caused enough damage to the brain to manifest potential strokes and heart failure, days or even weeks after the event. No outward signs will show what has happened, apart from possible groups of tiny red spots which indicate bleeding under the skin. The walls of veins or arteries could be crushed/damaged during the act, which would produce *** clotting. These detach and circulate in the *** stream and are the harbingers of cerebral and heart damage.
Is this outcome acceptable from two people agreeing to choking? Psychologically, the strangled individual suffers trauma, anxiety, memory loss, emotional stress, PTSD for very good reason, sleeplessness and when they do manage to sleep, they often suffer nightmares.
Edging is something that some bdsm people talk about experiencing, and pushing limits occurs occasionally. I don't think that edging on the edge of death is acceptable.
This thread is so far down the news feed now, that it's going to be lost. What can be done and where, to bring this subject into the glaring spotlights that it deserves?