I have read a few different accounts where folks have said they are more successful with losing consciousness faster with their heads facing upwards. I've never personally tried it but it might be something to consider if you're going to "practice."
I think so long as you've got the ligature just under your jawline, you should get your carotids even if you can't feel it with your hands. It shouldn't crush your trachea there.
I will not practice. I am terrified I will like it too much and it'll become a problem. I am actively trying not to CTB so I don't want to flirt with death. But all the power to the people who are able to practice for when it comes time. At least then you'll be more confident of success.
chat GPT just told me this:
If you block the arteries way up high on the neck—where the internal and external carotid arteries are—you can seriously reduce blood flow to the brain, leading to loss of consciousness or even brain damage if the blockage lasts too long.
What Happens When These Arteries Are Blocked?
Temporary blockage (like choking or pressure)
If pressure is applied to both carotid arteries (like in a chokehold or strangulation), the brain is starved of oxygen.
This can cause dizziness, confusion, vision problems, or loss of consciousness within seconds.
If the pressure is released quickly, blood flow returns, and the person usually recovers.
Prolonged blockage (strangulation, stroke, or injury)
If blood supply is cut off for several minutes, the brain cells start dying (this is basically how a stroke happens).
This can lead to permanent brain damage or death if oxygen is deprived for too long.
Carotid sinus reflex (fainting risk!)
There's a sensitive area called the carotid sinus (near where the common carotid splits).
If you press too hard on it (even accidentally, like from a tight collar or sudden neck pressure), it can trigger a reflex that slows the heart rate, causing fainting (vasovagal syncope).
This is why some martial arts chokes work so fast—they stimulate this reflex and cause a quick blackout.
So, in summary:
Brief pressure = dizziness, fainting.
Longer pressure = unconsciousness, possible brain damage.
Too long = life-threatening due to lack of oxygen to the brain.