Our body requires a lot of proteins, carbohydrates and fats but body builders in the gym generally recommend diets high in carbohydrates, low in complex carbohydrates and lacking in fats and proteins. You need to try and add more protein powders in your diet because protein helps in building muscles. Healthy fats are also needed for a lean body and for the production of hormones.
You should try and have small meals because they provide energy and also provide the essential nutrients. The digestion of food becomes easier if you have them in smaller quantities. Multivitamins are also a good source of energy.