Peanut butter is a great source of energy because it has healthy fats and protein. You can buy peanut butter, but make sure to check the expiry date and refrigeration needs. Buy a pack that doesn’t need a refrigerator to store after opening it.
Whole-wheat crackers are a great choice to store because these contain higher fat content. The crackers have a short life, but these an provide good fiber for you to feel satisfied for the long hours. You can buy vacuum packed crackers to increase their freshness.
If you want a high energy food, then the mixture of nuts and train is really healthy to take as a snack. The vacuum package will give long time freshness to the mixture from oxidation.