Are you rushing for a plane every time you eat? Chew your food at least 10 times before swallowing them. If you don't chew for long enough, the food that are passed on to the inner digestive system will need extra effort to digest the food. Apart from clogging up the process, the food might be stored for future processing rather than completing the digestive process.In a shopping mall, you will be offered a wide range of food and most people will opt for fast food. Yes, fast food can fill up your stomach. However, it can add on the pounds to your body faster than any other food and will harm your body in some way.