In order for your body to function at maximum capacity it must have the right nutrients. many people's bodies are functioning at half-power due to lack of all essential vitamins and minerals the body needs.
Good foods to eat:
I would say omega 3 fatty acids are good for growth. It is certainly something most people are deficient in. So, Fish - maybe tuna in sunflower oil cans. Or red salmon cans. Flaxseed is a good snackfood.
Finally avocado. They are a very good superfood. I instantly feel a positive effect after eating an avocado.
Soups are another quick tasty way to get nutrients.
Smoothies. I personally use a machine called the nutribullet. It is very good and simple to use. Look on amazon. A typical smoothie would be: half kale or spinach leaves. a banana, handful of blueberries, some flaxseed, then fill with water or coconut milk
Finally, make sure you drink enough water. your pee should never be yellow. If it is you know your body needs more.