But the Roman gladiators drank something or the other. Archeologists unearthed the intact skeletons of several gladiators in Turkey not long ago and in attempt to understand their diet better analyzed their bones. It would seem that they have double the normal strontium to calcium that others do (or did, as I have to assume they are comparing that to people who lived then and not to people who live now, as comparing it to people who live now would be silly).
This has led them to believe that they did have something different in their diet, the gladiators that is. They speculate that the sand pit warriors were drinking some kind of energy drink, perhaps made of ash, water and vinegar. Apparently Romans used ash as a spice, for a smokey flavor.