For guys who cannot put on weight, the mass gainer is a must. Animal mass is one of the most cost effective mass gainers on the market. After shock gives you everything you need post workout- protein, carbs, creatine, vitamins and joint support). Legendary has both laxogen and epicatechin, two of the best natural strength and mass building supplements. Finally, a pre-workout to help you get through your toughest workouts. I chose hypershock rage here but you can substitute your preferred pre.