You’re not imagining things: this Monday morning hangover might be harder than last simply because you’re a week older. Hangovers get worse with age for a few reasons. One is that a liver enzyme called alcohol dehydrogenase (which works to transform the alcohol) decreases with age. Another is body fat, which doesn’t absorb alcohol, but also increases with age—essentially meaning our bodies run out of space to store the booze. Grab a glass of water and read more about how aging is the pits at NY Mag.