Do you really need those extra electrolytes?

Decided to have an isotonic or sports drink to hydrate after sweating? Experts say that such drinks aren't usually necessary for workouts lasting less than two hours. — AP

Social media is filled with influencers rating electrolyte supplements, or even telling followers how to make their own.

But experts say many of the claims about the health benefits of these drinks need to be taken with a grain of salt.