Year-end parties usually are liquid-y, so even before we reach the height of the celebratory season, which includes Christmas and New Year’s Eve, a bit of planning may avoid hangovers—and could well be a life-saving tactic. The suggestions that follow may sound like wet-blanket advice, but anyone who has ever suffered the worst after-effects of a night of boozing and regretted it knows what I’m talking about. A few precautions can do wonders. And then the morning after, it’s distinctly possible to escape searching for hangover cures, painkillers, and an old spouse’s remedies like hair o’ the canine. Most of which don’t work and can have their own side effects. Let’s clear up one thing now: Mixing drinks is not a cause of intoxication. It is a result of over-consumption of alcohol, regardless of what kind it is. Since we’re all different, the degree of intoxication is related to various …