Convenience stores quickly began to run out of food (oddly, people seemed to be stocking up on the least nourishing of snacks, such as crisps).

Research studies show that high-fiber foods can easily trim 300 or more calories off your daily intake, without your even being aware of the difference.

Also, many high-fiber foods are low in calories, so you can satisfy your hunger with fewer calories. Whole grains, vegetables, and fruits are great sources of fiber.