Alcohol helps us remember the good times and forget the bad.
Researcher say alcohol affects memory formation, so memories of the stat of the night, when we are just tipsy and having fun socializing with friends, are strong happy.
But any embarrassing antics that happen as we become more and more drunk are quickly forgotten.
The discovery of alcohol helps us remember the good and brush aside the bad could explain or fascination with alcohol.
According to a researcher, this bias towards positive memories means that people are more likely to drink heavily the next time they go out because they only remember the good memories about the last time.
The Sussex University researcher looked at how well people recalled flash cards shown just before and just after drinking several units of alcohol.
Their answers were compared with those from a similar group given alcohol-free drinks.
The drinkers remembered the first set of cards better than the non-drinkers.
Bur they scored worse than the non-drinkers when asked to remember the second set of cards, with emotional scenes proving hard to remember.
It is though small amounts of alcohol prevent the brain from forming new memories and help consolidate memories of things that happen just before we start drinking.
Bur, in high quantities, alcohol may interfere with the brain chemicals involved in memory formation.