You will not grow, if your diet is lacking adequate supply of Macros and Micros.
Macros are Carbs, Proteins and Fats. Micros are Vitamins and Minerals.
The diet which most of us follow contains carbs and fats in ample amount. There is always a shortfall of Proteins and Micros. This is the reason, supplements are taken to meet the requirements.
Pre Workout Supplements
These supplements help to boost energy by increasing metabolism.
Post Workout Supplements
These supplements mainly have proteins which helps in muscle building.
Below are the links to purchase supplements from Amazon.com