Ups and downs of alcohol use among first-year college students: Number of drinks, heavy drinking, and stumble and pass out drinking days

►First-year students showed large fluctuations in alcohol consumed across 70 days. ►Drinks consumed, and binge, stumble, and pass out days were highest on weekends. ►Gender, initiation age, Greek membership, and alcohol motivations predicted drinking. ►Novel questions should be asked about erratic drinker populations such as students.