When your alarm goes off in the morning, do you babble incoherently, stumble across your room, or drool uncontrollably? You may suffer from sleep drunkenness, according to a study published in the journal Neurology.
About 15% of the nearly 20,000 people surveyed experienced "confusional arousals" in the preceding year. These episodes took many forms, including amnesia or extreme confusion upon waking, and were strongly associated with other sleep and mental disorders.
What's the significance of these findings? After all, many of us have been a bit confused and disappointed when it's time to get out of bed. TIME explains: