What is huffing? The intentional breathing of gas or vapors with the purpose of reaching a high. What does huffing do to the brain? Changes the electrical activity of the brain. On a elecroencephalograpghy, (or EEG) the brain will show up as sharp impulses. What toxic effects and the “risks” that occur with this practice on the body. The brain: changes the electrical activity within the brain, possibly resulting in hallucinations and convulsions. Also the center of emotional behavior, is adversely affected during and after exposure to inhalants. Many inhalants are thought to dissolve the protective mylein sheath that surrounds neurons-brain cells- resulting in cell death. Cerebral Cortex