Eat a variety of grains, proteins, vegetables, fruits and dairy to get important nutrients. Breakfast cereals provide fiber for digestion and cancer risk reduction. Milk is important for calcium needs, and meats, spinach and legumes supply iron which frequent dieting can deplete, causing tiredness. Choose healthy fats like olive oil over butter for cooking and avoid junk foods high in fat, sweets, salt and sodium.

1. Add Variety. Eat different grains, proteins, veggies, fruits, and dairy products. Have a different breakfast cereal, vary meats for dinner, and snack on nuts and fruit.

2. Breakfast cereals are great source of fiber: which 20-year-olds need to help with digestion problems and to reduce cancer risks.

3. Milk does a body good and 20-25-year-olds need 1,200 milligrams of calcium every day. Drink up!

4. Meats, spinach, and legumes are a great source of iron, and iron-deficiencies are an easy way to feel weak. Frequent dieting can make people suffer from low iron levels, which can cause tiredness.

5. Even as happy as that kid looks: get rid of the junk. Stay away from fats, sweets, salt and sodium.

6. When cooking, use olive oil instead of butter—it’s a healthier fat.