Sugar and refined carbs spike insulin levels, and when insulin levels are high, your body can't tap into its stored fat. Eating sugar and white flour also doesn't offer your body any nutrition — it's essentially just empty calories. It will leave your body craving more food, which actually increases hunger, making you eat more. By including protein, fibre, and healthy fats into your snack, you'll satiate your hunger. Try these protein-packed snack ideas.