How long after drinking water does it actually hydrate your body?

A man comes home. He is thirsty. The inside of his mouth is dry. He pours a glass of water and drinks it down. The water is cold…

What would happen if you kept drinking ocean water to survive on a deserted island? Can you boil the water so it’s safe to drink?

If you were just slurping it right out of the sea, you’d be doomed. The salt content in seawater is so high that your body simply can’t handle…