Blackouts er ikke nødvendigvis forbundet med hvor fuld du er, men nærmere hvor hurtigt du bliver det. Hvis du drikker langsomt (men sikkert

) kan du godt blive meget fuld uden at få blackouts. Det hjernen ikke kan tåle er en hurtig stigning i blodkoncentrationen.
Citat:
Subsequent research has indicated that blackouts are most likely caused by a rapid increase in a person's blood-alcohol concentration. One study, in particular, resulted in subjects being stratified easily into two groups, those who consumed alcohol very quickly, and blacked out, and those who did not black out by drinking alcohol slowly, despite being extremely intoxicated by the end of the study
http://en.wikipedia.org/wiki/Blackout_% ... amnesia%29