Even though some people joke about it, it does regularly occur that people choke each other in mutual agreement, Breath Play. Not until one of the two dies of course, but it is a lot more than just stroking the neck. Why do people want this?
In short, people are looking for a certain sensation, in this case a rush or even light trip caused by oxygen deprivation in the brain. Two possible effects are that an erection will get even harder and that an orgasm can get even more intense.
Back in the day, when hanging was a common form of death sentence, people sometimes saw the hanged ones get an erection, even more rare but not uncommon, with ejaculation. There even has been a time when strangulation was advised as a medical treatment against impotence.
"Breath Control" and Relaxation
The most subtle way to do this is by Breath Reduction. The mouth and nose will be closed so that breathing is no longer possible. The effects are mostly psychological. When your body notices it does not get any air it gives off an alarm signal, you feel panicked. Not that much is going on yet, your blood has a small oxygen reservoir, but the preparations to survive are already being taken.
Wrestling Session where I keep him in a stranglehold while Lilith Darkmoon does Breath Play
Eventually you can succeed in surrendering to the situation without getting panicked. Your brain does notice the increasing shortage of oxygen and will put all efforts into 'surviving without breath'. Processes like thinking and emotions will get less attention. When you achieve this state of mind you can get completely calm and relaxed.
Mask to increase breathing difficulty and gives me the possibility to prohibit breathing altogether
If you have a Session with me, I will never start with holding your breath as long as possible. Fainting is something I will not do. Despite the fact that it is a rather vehement part of the Session, safety still has the priority. It will be build up slowly and I will always monitor your reactions. If you think this is too much for you, do not worry, there are a lot of other things we can do!
Another way to reach this effect is to squeeze the windpipe (trachea) by pushing on the larynx. This is a lot less subtle kind of Breath Play. It hurts pretty quickly and you can hold out a lot less longer than Breath Reduction. But, according to one of my slaves, 'it does give the lovely feeling that his Mistress has complete power over him.'
Yet another way of strangulation is squeezing the jugular vain. In this way the blood-flow to the brain is halted, ensuring a shortage of oxygen rather quickly. I can only do this for a few seconds because it is a fast way to reach unconsciousness. Like I said before, I will not let it get that far. These few seconds are enough for the effect I want to give you. When your body begins to weaken I will let go, giving your brain a large dose of build-up oxygen, giving you a rush. However, this is not something for beginners and I will only do this when I am absolutely sure you can handle it.
Your brain is a very nice toy!