Stage II is the predominant sleep stage during a normal night's sleep. The distinct and principal EEG criterion to establish stage II sleep is the appearance of sleep spindles or K complexes. The presence of sleep spindles is necessary and sufficient to define stage II sleep.
After 5 hours â your BAC would be 0.005. Alcohol would be eliminated from the body at about 5 hours and 20 minutes (the body metabolizes alcohol at the rate of about 0.005 per twenty minutes, as 0.005 x 3 = 0.015). So it is easy to tell when your body will be free of alcohol.
However, 20 drinks is a negligible amount of alcohol in your system and even this amount of alcohol in your bloodstream is not detectable after 24 hours. Check out the BAC calculator above to calculate different drink combinations within a 24 hour period.i Tara. Alcohol only stays in the urine for about 24 hours, or one day after drinking. So a drug screen for alcohol based on urinalysis should not detect alcohol 48 hours after use.