[25] This classic children’s snack can work for adults, too, Anderson says. In fact, you can enjoy a healthy snack of ¾ cup of original Cheerios for 78 calories. You’ll also score 2.1 g of fiber and some calcium (about 75 mg). “Original Cheerios are a simple, budget-friendly snack made with whole-grain oats,” Anderson says. To make the whole-grain goodness last, take a cue from kids and eat them one by one.