We do not get energy from all foods, we only get energy from the foods that have energy in them. Certain man made foods, such as creme puffs and donuts, have no energy in them. They are items that have had chemicals thrown together and have no life in them. Or if genuine food is cooked at too high heat for too long it kills it, many of the nutrients in the food are dead and you get very little, if anything, from the food. A good example of this is pasteurized milk. Milk is pasteurized at 145 degrees to kill all the pathogens in it. It also destroys the vitamins, such as vitamin D, and proteins in it. As a result many people have allergic reactions to the protein casein, and the milk companies have to add back vitamin D and other ingredients.
Sometimes real food is destroyed by the preservatives and other chemicals that have been added. Most food from a fast food restaurant is dead food. French fries, hamburgers, hotdogs, pretzels and ice cream are all dead.
Dead foods to avoid: refined sugar, table salt, white flour, alcohol, soft drinks, caffeine, artificial sweeteners, preservatives, genetically modified foods and irradiated foods.
What can I eat? Real food such as vegetables and fruits. More about these next time.