Hi
Proper diet certainly contributes to a healthy diet. Be sure you are eating a balanced diet, meeting all your needs from each of the levels of the food pyramid(cereals, whole grains, pulses, low fat milk & milk products, fruits, vegetables, fat & nuts , seeds, Sugar(limited) .
Include more of fruits & vegetables(antioxidant foods) Berries Cherry, blackberry, strawberry, raspberry, crowberry, blueberry, bilberry/wild blueberry, black currant), pomegranate, grape, orange, plum, pineapple, kiwi fruit, grapefruit,Kale, chili pepper, red cabbage, peppers, parsley, artichoke, Brussels sprouts, spinach, lemon, ginger, red beets) , iron rich foods(Apricots, prunes, dates, nuts like almond peanut).
Some of herb which is helpful for good energy level (Ginseng-ncreases energy levels when taken in moderation. It supports insulin's conversion of blood sugar into fuel for energy).Green tea helps the body burn its fat stores, which boosts its energy.
The B vitamins---B1, B2, B6 and B12, and also biotin, folic acid, niacin, and pantothenic acid---increase the body's energy. Natural food sources include leafy green vegetables, whole grains and sweet potatoes.
Protein foods should include as whole grains, fish, lean meat, egg white, sprouts, dal.
Use limited amount of fat which is healthy fat such as nuts, seeds & sunflower oil, rice bran oil, corn oil, olive oil for cooking.
Most important zero calories drink is water. Drink at-least 2-3 liters in a day.