Air supply
This page lists an activity that can be particularly dangerous if all safety measures are not complied with. Play safe - don't play alone.
Air supply is involved in the sexual practice of partial asphyxiation by strangulation or suffocation of one person by another during sexual intercourse or by oneself during masturbation. The decrease of blood to the brain is said to heighten sexual pleasure.
Practice
A sexual partner may or may not be involved in the act. However, if performed solo, the practice is often referred to as autoerotic asphyxiation, or AEA. Various methods are used to achieve the level of oxygen depletion needed such as a plastic bag over the head or self-strangulation, typically by the use of a ligature (scarfing) or hanging oneself. The increased pleasure results from the body producing more endorphins as it approaches the state of asphyxia. Pleasurable or not, it is an extremely dangerous practice that results in many accidental deaths each year.
