10. Ireland

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The Irish somehow came up with a  completely different idea about treating hangovers, and it doesn’t involve special meals or rubbing anything on the body. The best advice they offer is to go down to the river bank and bury yourself up to your neck in wet river sand. Some dedicated friends would surely be appreciated under these circumstances, since digging a hole yourself when you’re suffering from a killer hangover sounds like a good way to make it even worse.