Thank you for your edit. I feel like some people will think you're being dramatic and that strangulation specifically sounds like this far-fetched phenomenon. However, I believe this is really important to address.
I want to share my two cents and illustrate why it's not all that uncommon yet how common it is for this to be overlooked. I once was into kinky choking with significant others. I no longer entertain this and will stand by this no matter how tempted. In a frisky moment with my narcissist ex's hands on my neck, he straight up said: "I want to SUFFOCATE you". No one has ever said something like that to me, he was completely unprovoked, we were in good moods, and we didn't even have so much as a disagreement at that point. For him to say that to me, as a narcissist who isn't a veteran with PTSD, let alone a veteran with PTSD who clearly a massively damaged and dangerous person AND has war trauma, is chilling as is. Add in a few fights and drama, that becomes an even more concerning situation.
I'm not trying to dictate what people should do in the confines of their bedrooms, but I have to at least voice this. Take the kinky element out of the picture for a second. That is a full-grown man sucking the oxygen out of a woman's lungs, both in their most vulnerable and defenseless states. If a form of taking someone's life is what gets you going, that's your choice and a different story entirely. I'm just saying it'd be wise to think twice, think about what actions are actually happening right before your eyes and if the risk is worth the reward. I haven't even gotten to the psychological and mental effects that can come from glorifying choking and downplaying its dangers. There are plenty of studies online with statistics of choking inadvertently becoming fatal. One does not need to intend to murder, in order for it to happen.
I'll even share one more. After breaking up from the narcissist, I had an extremely successful, attractive, well-liked guy tell me that he chokes anyone else in the room when he watches a horror movie. I later read up on it, and this is also not healthy behavior. So if this can be such a common concept thrown out in everyday conversation, why would anyone want to purposefully subject themselves to this literally life-threatening position - for the cheap thrills? Because they do it online? "Everyone" else does it therefore you should too?
PS: I'm not a prude and am all for other playful kinky delights with the right person. Just felt the need to share this from my personal experience which is also supported by clinical research.