> Beverages are being selected to not only improve hydration They don't need new types of beverages to improve hydration; water is already optimal. What they n

> Beverages are being selected to not only improve hydration They don't need new types of beverages to improve hydration; water is already optimal. What they need is to give people sizeable plastic water bottles with a screwtop on request rather than a tiny plastic cup. I always end up waking at 4am parched from the dry air and weighing whether I should wake both my poor neighbors so I can get up and track down a flight attendant. And then bring three spillable cups back to my seat. (Bringing your own bottle is great if you remember to do it, but it's often hard to refill on the plane depending on how they are serving water.)