Weight gain banana flavoured with a free shaker To gain weight you need to increase your daily food intake with good nutrition. Protein and carbohydrates are the key nutrients in weight gaining and achieving a ‘toned’ look. A good daily diet is important and should be supplemented at least 3 times per day with a nutritious drink (between meals). The extra protein and carbohydrate (not fat and refined sugar) will enable your body to gain weight healthily. Weight Gain is ideal for those with a fast metabolism or lean physique who find it difficult to ‘bulk up’ with their normal calorie intake. Most of the energy comes from carbohydrates and protein rather than fat (35% protein, 50% carbs, 4% fat). 9g Creatine and 18g BCAA’s per daily serving. 1.4kg.