I believe 8 glasses came from a study that said we need approx. 8 glasses of water per day from all source, e.g. including food. But media outlets spread this a

I believe 8 glasses came from a study that said we need approx. 8 glasses of water per day from all source, e.g. including food. But media outlets spread this as we should drink 8 glasses day and it stuck ever since.