Sometimes people engage in a sexual activity that involve intentionally cutting off air supply. This type of sexual activity is called erotic asphyxiation (breath play).
Breath play is a sexual activity that involves intentionally cutting off air supply for you or your partner with choking, suffocating, and other acts.
When a person does this act to himself, it is called autoerotic asphyxiation.
When you rob your brain of oxygen, you will lose consciousness, but before loosing consciousness, you experience a high euphoria, dizziness and lowered inhibition.
People who are into this sexual activity claim it can heighten sexual arousal, and make orgasm more intense.
Erotic asphyxiation can however lead to accidental death due to lack of oxygen.
Uncontrolled choking can cause permanent brain damage, heart attack, damaged larynx, bleeding into the brain, and possible blindness.
So please, if you like been choked during sex, make sure your choker is not under alcohol or on drug.