The body needs calories to produce energy. More importantly, the body needs carbohydrates, the primary source of energy, but it also needs protein and fats to help regulate blood glucose and prevent drastic spikes or drops in blood sugar levels. Other nutrients that play a role in energy production include vitamin B6, B12, folate, and iron. Regularly fueling the body is a great way to supply constant energy to the body. This is why snacking can be a very effective way to sustain energy throughout the day. However, we are not referring to potato chips and candy, but rather, balanced, nutrient-dense snacks. To create a balanced snack, pair at least two macronutrients, such as a carbohydrate and a protein. This will give you energy without a subsequent crash. Here are the best energy-boosting snacks to help combat that mid-day fatigue.