Definition
A "weight gainer" is a supplement, typically a powder, designed to help people gain weight, especially muscle mass. It's usually high in calories, protein, and carbohydrates. Think of it as a concentrated form of food, packed with the nutrients needed to build bulk. Unlike a regular protein shake, a weight gainer has a much higher calorie count. It's often used by athletes or people who struggle to gain weight through diet alone. They are not magic, requiring consistent effort and exercise.