Your body needs carbohydrates for your muscles and the storing of energy. 5. Eating what you want. Eating healthy and exercising doesn't give you an all access pass to eat anything you want. Everyone needs the same nutrients whether they exercise or not, as well as fruits and vegetables. 6. Not enough calories Although losing weight involves calories, losing it too quickly is never safe. Even though it can be used in cooking, it's the healthiest when uncooked, such as with a salad or dipping sauce. When you use it with cooking, you should heat it on low to medium temperatures, making sure to avoid high heat. 3. Butter Butter is one food that has been around for many, many years. Butter tastes good, and offers sources of Vitamin A and other fat soluble vitamins such as E, K, and even D. Broccoli Broccoli can help protect against breast cancer, and it also contains a lot of vitamin C and beta-carotene. One cup of chopped broccoli contains 25 calories, 0 fat, and 3 grams of fiber. Spinach Spinach contains carotenoids that can help fend off macular degeneration, which is a major cause of blindness in older people. For adults, 3 cups is the ideal goal. For kids 2 - 8, 2 cups is where you want to be. When choosing milk products or yogurt, you should go for fat-free or low-fat. Those of you who don't like milk or can't have it, should go for lactose free products or other sources of calcium such as fortified foods and beverages. If you can't get them to eat good food willingly, there are ways to sneak them in, such as making muffins out of bananas or apples, or pizza with spinach on it. - Call fruits and vegetables by funny names. You can refer to broccoli as "trees", making them more fun to eat. There are many different names you can call fruits and vegetables, even making up your own if you prefer. Shopping alone will prevent this, and ensure that you only buy the foods you need. 2. Water or milk instead of soft drinks You can still enjoy your favorite drinks at a sporting event or night out, although you should stick with the smallest size when shopping to save money and calories. Children and even adults need milk or milk products on a daily basis.