Even slightly processed food has way more salt than we need, while caffeine & alcohol (the two most widely used drugs) have diuretic effects. Unless you prepar

Even slightly processed food has way more salt than we need, while caffeine & alcohol (the two most widely used drugs) have diuretic effects. Unless you prepare your food from scratch and keep the drugs to a minimum, you need additional water intake to counteract those things. I have often woken up in the middle of the night dehydrated and felt horrible-- half a bottle/glass of water later and I'm usually able to sleep through at least one more full REM cycle.