Most people have been brushing their teeth wrong their whole lives. Are you one of them? Dr. Jonathan B. Levine explains why there's no shortcut for healthy teeth and gums.

View Part 1 of Brush Your Teeth Perfectly.


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Dr. Levine answers your top questions.

3 Dos & Don'ts for Microwaving Popcorn

Microwave guru chef Matt Abdoo has his three tips for making the best, fluffiest and perfectly cooked popcorn.

Microwave popcorn is one of the best snacks! But sometimes it's difficult to get that perfect bowl. So microwave guru chef Matt Abdoo has his three tips for making the best, fluffiest and perfectly cooked popcorn.

DON'T USE THE POPCORN BUTTON

As tempting and easy as it may be, don't fall for the "Popcorn" button on your microwave. Not all microwaves are made the same, so they won't cook your bag the same way either. And there's no sensor to determine when the bag is ready, so it'll just keep cooking your popcorn until the set amount of time finishes.

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