Alcohol and hangovers

Hard liquors (vodka, gin, rum, whisky, tequila) with zero-calorie mix (diet stuff or soda or water) or straight up are the lightest calorie hit if you like highballs (60-80 cal/oz in most cases) and are planning to drink a lot.

I like prosecco (~500 calories for an entire bottle) if I'm having two or three, and most of the other wines I drink run about 120 calories for a standard pour too, so those are all reasonable options for me if I'm trying to keep it light. I'm also a scotch drinker and that has the double benefit of being low calorie and a slow sipping drink.

If I'm watching my calories I don't drink anything with fruit juice, liqueurs of any kind, regular soda, or bar mix stuff like lime cordial, grenadine, etc. And I usually don't do beer either unless I'm just having one.

As for hangover food, I try not to allow myself to eat a ton of junk just because I feel like trash. Lots of water, coffee, an Advil, and a reasonable portion of something with a decent proportion of fat and protein (I actually think a hamburger is perfect for this as long as it's a regular one and not, like, a Double Big Mac or a Baconator or something.) But all that stuff is kind of anecdotal at best and nothing but time and painkillers actually fixes a hangover, I don't think, so I try to avoid getting them if I can help it by stopping alcohol a couple hours before I sleep, drinking lots of water in the intervening time, and overall just trying to be responsible and not drinking too much.

I also try to go for a short, easy run as I have a (probably-misplaced) belief that it will help me, I don't know, get all the alcohol out of me faster? I don't think there's any scientific basis to this but I figure even if it's psychological it still helps and all those drinking carbs are perfect for exercise energy anyway.

All that old advice about alternating drinks with water, staying hydrated generally, eating a meal first, knowing when to stop, etc. etc. is the best in my option.