One of the first things Regiina Nohova had to learn when she moved to the Czech Republic was how to open her mouth wider when she spoke. As a native-born Estonian, she simply wasn't in the habit. "In Estonia, we speak slowly," she said. "We almost don't open our mouths when we speak. We don't have to articulate the words. It's our nature. It's colder there, and people spend more time inside, and that's why we're like this.