2 cups of popcorn
Air-popped popcorn is naturally high in dietary fiber, low in calories and fat, and free of sugar and sodium. It also has a lovely, light texture which can see us crunching happily through the day. However, this one comes with a warning - steer clear of adding butter or sugary toppings as this can shoot the calorie content through the roof. One survey found that a medium-size buttered popcorn purchased at the cinema contained more fat than a breakfast of bacon and eggs, a Big Mac and fries, and a steak dinner combined. Instead, add cinnamon or salt to give your popcorn a boost.