Mass gainer 2kgMass gainers are supplements designed to help you gain weight, particularly in the form of muscle mass. They are typically high in calories, carbohydrates, and proteins, making them ideal for people who have a fast metabolism, struggle to gain weight, or are involved in intense physical training. Calories: Mass gainers are loaded with calories, often ranging from 500 to over 1,000 per serving. Carbohydrates: A high carbohydrate content helps to