Why actually the person feels dizziness when he is dunken?

Question

Waht happens in the Brain which feels him good or dizzy.

Answer 1

While heavy drinking may be considered a game to some, it is a very dangerous game! Excessive amounts of alcohol deprive the brain of oxygen; this is what causes the dizziness. Vital bodily functions can begin to shut down. Symptoms may include vomiting, unconsciousness, and slow or irregular breathing.
Overdrinking may rarely cause death directly, but it still poses a health threat. Alcohol can raise havoc with any organ in your body, Alcohol’s favorite targets are the nervous system, the liver, and the heart.

Answer 2

Alcohol is toxic to your body, it should not be consumed, even if it is sociably acceptable.