BAL means Blood Alcoholic level. It’s the stage of “euphoric”. 10% indicates that 1/10 of the person blood contains alcohol. This rate will be higher for the chain drinker since the drinks contains more alcohol which spoils the health. It starts affecting the motor skill development. People often shout and speak with a louder voice and also they start forgetting many items.
People even become more emotional. People in this stage won’t even remember how many glasses of alcohol has been taken in a particular moment.