Drowning yourself

Suicide by drowning is the act of deliberately submerging oneself in water or other liquid to prevent breathing and deprive the brain of oxygen. Due to the body's natural tendency to come up for air, drowning attempts often involve the use of a heavy object to overcome this reflex. As the level of carbon dioxide in the victim's blood rises, the central nervous system sends the respiratory muscles an involuntary signal to contract, and the person breathes in water. Death usually occurs as the level of oxygen becomes too low to sustain the brain cells. It is among the least common methods of suicide, typically accounting for less than 2% of all reported suicides in the United States.