Savannah Guthrie brushes her teeth in the shower: Is that wrong?

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Tuesday’s discussion about showering on TODAY’s Take continued on Sirius Radio, where Matt Lauer said he showers three times a day and Savannah Guthrie admitted to brushing her teeth there. Is brushing in the shower a bad idea? Savannah and NBC News medical expert Dr. Natalie Azar join TODAY’s take to settle the matter once and for all!