Well, all I drink is RO water, and I run a lot out in the hot sun. Minerals come from the banana I ate, or the energy gel, or oatmeal for breakfast. It really is fine to drink RO (and probably DI) as long as you eat food,which almost everybody does. The ratio of minerals from water vs. food is so huge that the content in the water isn't worth counting. The water is not going to act like a magnet and suck the minerals from my body
