Wanted to share tips to not die if your boat sinks or you somehow end up in the middle of the ocean:
-cold habituation, take cold showers and swim in cold water regularly
-increase body fat to mitigate heat loss (this is how ancient people were able to cross the oceans without newfangled drysuits etc. think of how chunky the average polynesian man is)
-increased fitness, be able to swim and most importantly tread water and float to keep your airway above water. it is shocking to me the amount of people who go on or near water without knowing how to swim

any other good tips please share here, its a matter of life or death