You know that the secret to losing weight is to burn more calories than you consume. Well, here’s a way to do that: Eat more air. 

What do I mean by that? Eat foods that contain more air. It’s the difference between regular crunchy Cheetos and Cheetos Puffs. And that advice comes from a study published in the journal Appetite. 

It was conducted by nutritionist Barbara Rolls, who gave people as many cheese snacks as they wanted. One group ate regular dense, crunchy Cheetos – the other group ate the Cheetos Puffs, which are aerated, which means they contain more air. 

The results? The Cheetos Puffs group ate more snacks by volume – because the Puffs are bigger – but they ended up consuming 21-percent fewer calories overall. And that’s considering that ounce per ounce, both snacks have the same number of calories. 

Now, of course we’re not advocating a Cheetos diet plan. But the experiment shows that eating foods that are less dense, allows you to eat more, while consuming fewer calories. You’re basically tricking your senses into believing you’ve eaten more food by pumping up the volume. 

So nutritionist Barbara Rolls recommends eating cereals that are puffier – like Chex instead of granola. Because we’ll fill the bowl the same amount – but since the Chex take up more room, we’ll end up eating less. 

Another example? A Starbucks Grande Cappuccino has 70 calories less than a latte. If you’re a daily coffee drinker, that’s like cutting out 26,000 calories a year, enough to lose eight pounds. That's because cappuccinos are based on steamed milk, which has more air and fewer calories.