I think a sport drink is basically a branded version of this.
Given that sweating while dancing means loss of salt, having a drink with a bit of salt to replace the lost salt seem reasonable. Replacing all your water consumption with a isotonic drink on the other hand doesn't seem like a good idea.
As far as sugar goes I would use a more complex one than glucose.
Thanks. The sugars in my cupboard don't say what molecule they are, but I assume sucrose, so that's what I'd go for by default.
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