Minerals in your blood. Exercising can make you lose a lot through sweat. It's good to make sure you compensate for it.

Humans back home call them "sports drinks". You can think of it like a flavored water drink, if you want.

[He squints at one of the labels on an unopened bottle, before handing it out to Crea.]

Orange flavored. Try it if you want. I'll drink it if you don't like it, so don't worry about wasting it.