Robin Camarote has a good article at Inc.com about a small change in our daily routine that can help boost our creativity and problem-solving effectiveness. She argues against eating at your desk, and she notes that research supports her recommendation. Here's an excerpt:
Whether you run out and grab something from a restaurant or bring leftovers from home, about 40 percent of us eat lunch at our desks. Most of us do this because we believe we'll get more done. And if you're like me and often work from home, it might seem utterly ridiculous to sit down at the table to eat when there is no one to talk to and the computer and phone are just a couple feet away. I believe I'll get through more items on my to-do list if I multi-task.
But working through lunch only feels more productive. In fact, "...research shows that there are tremendous performance advantages to stepping away from your computer, and even more pluses if you can get outside. Taking a break from cognitively taxing work improves creative thinking," says Kimberly Elsbach, professor of management at the Graduate School of Management at the University of California at Davis, "and everybody's job has a creative component, such as problem-solving, managing teams or finding creative solutions." Not to mention taking a break from that steady stream of emails helps reduce stress and, in turn, helps keep you be healthier.