2. Drain the beans, then plunge them into a large bowl filled with ice water to stop the cooking. When they're cool, drain again. Zest the lemons and julienne or mince the zests. Juice the lemons.
3. When you're ready to serve, place the oil in a large skillet and turn the heat to medium high. Add the beans and cook, tossing or stirring, until they are hot and glazed with the oil, 3 to 5 minutes. Toss in a serving bowl with the lemon juice, top with the zest, and serve.
"The happiest people in the world interact about 7 hours a day," says Dan Buettner, author of Thrive. "They don't just wake up in the morning and schedule 7 hours of interaction. A lot of it happens to revolve around food and the rituals that surround food." Buettner circled the globe in search of the world's happiest populations -- he shares four tips with The Splendid Table.