Now, because your body can’t hold on to water as it normally would, you start to expel what you don't absorb-and you find yourself scrolling through Instagram while waiting in the bathroom line to pee. Also known as vasopressin, it helps your kidneys balance the amount of water in your body. And particularly relevant to this discussion, alcohol depresses the secretion of anti-diuretic hormone in the posterior pituitary gland. That's part of why, when you drink heavily, you stumble around and slur your speech. What’s Up With That: Why Running Hurts Every Part of Your Body ArrowĪlcohol affects every organ in the human body through the blood stream, including the brain. Anyone who’s dealt with it knows it can be rough.

But it’s common enough that it has some well-known, and rather unendearing, nicknames-beer shits, day-after-drinking shits (DADS), rum bum, after-grog bog, and so on. Next-day diarrhea isn’t universal and, for some, alcohol actually causes constipation. The morning after the WIRED holiday party-which started with cocktails at a classy bar and devolved, as is tradition, into late-night scream-singing with buckets of beers at a local karaoke joint-saw the shared office bathroom morph into a toxic warzone. It can feel like the only way to relief: the unfortunate, unavoidable end of any excruciating hangover. And any regular drinker knows the agony and the ecstasy of the hangover poo. Scientists don’t entirely understand what causes hangovers, but every over-imbiber knows its effects: puffy skin, headaches, nausea, the feeling when you drink water that you just straight-up guzzled acid. Unfortunately, if you celebrate New Year's Eve with champagne and shots, chances are you may spend the first day of the new year on the toilet. A time for resolutions, for self-betterment, for dumping out the old and bringing in the new.

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