As shown in 1997’s Titanic and the story Charles Joughin apparently told, he made himself drunk with many bottles of alcohol to keep himself warm. But from what I’ve heard, alcohol only keeps you warm temporarily and it actually makes you more cold. Not only that, it also dehydrates you. So how did Charles Joughin survive and apparently not have any sort of hard illness or injuries and started working after a couple of days?
Hey there!
I recently answered a bigger question on this topic that involved Joughin quite a bit! It's here if you're interested :)