Everything's bigger in America. The portions, the cars, and now, our water bottles.

Does it seem like everyone is carrying around a 30-ounce tumbler? The reusable water bottle industry is a multi-billion dollar business. But don't forget about plastics. The sales of single-use bottled water also continue to rise.

We discuss how much of the hype around water is marketing versus science for the latest installment of In Good Health.

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