Many people like pouring a glass of water for their bedside at night — but is there anything wrong with drinking that same glass the next morning? What about that half drank bottle of water in your car cupholder? Of course, most people don’t think twice about drinking day old water from a clean source. Our bodies tend to become dehydrated as we sleep at night, and it’s not uncommon to reach for the remainder of that cup of water when we first wake up. But what’s the difference between fresh poured and older H2O? tasting Fresh vs. stale water Anyone who drinks water — that’s everyone lucky enough on Earth — could tell you that water that has been left out has a different taste to it. It’s not dissimilar to other beverages: When you leave soda out it goes flat; when you leave wine out the flavor changes. When water sites out,…