Brazil nuts

Brazil nuts are one of the few good sources of selenium, a mineral and micronutrient that helps maintain a strong immune system and can protect against heart disease and cancer. Brazil nuts are nutritional powerhouses, providing healthy fats, antioxidants, vitamins, and minerals. Nuts include heart-healthy 'good' fats that help lower harmful cholesterol levels, but if you eat too much, they may be rich in calories.

Because upping your exercise and activity levels might make you hungry, it's critical to pick snack foods that are high in nutrients while also satisfying hunger cravings. Nuts are a great way to avoid the 4 p.m. snack attack since they fill you up faster than other snack foods.