FOOD! But different types of food can give you different types of energy. Sweet foods such as cookies and candy give you a lot of energy, and fast—but that energy lasts for only a little bit of time, since sugar moves quickly through your body. But foods such as these energy bites that combine complex carbohydrates (oats!), protein (nut butters!), and fiber (oats and nut butters!), as well as some sugar give you longer-lasting energy. Power up!