@irontoenail - Actually most people do get enough water. It's only after exercise that you really need all that much more and most people who exercise are well aware of the fact.
People guzzle water now as though it will cure all their ills and to some extent that's a good thing, because you should try to stay hydrated, but after a certain point you're doing more harm than good.
A lot of vitamins are water soluble and when you drink too much water they get flushed from your system too quickly. B vitamins for example, which most people don't get enough of as it is, since they are mostly found in fresh vegetables.
I personally would give the oxygenated water a miss and would try upping my intake of green leafy vegetables if I wanted to feel better and do better at sports.