Oxygenated Water

Would oxygenated water benefit you any more than regular water?

I know there is already oxygen in there, but there could be more. Then again, I guess that would just bring us  to something like carbonated water. But, maybe without the carbon?

What about extra-hydrated water?

Salt

Salt should only go on the outside of food items. That way, it can be tasted and still not too unhealthy.

Well, I guess, we (our society) does need preservatives in order to carry foods long distances, save money, produce more, and have less waste.