What is a 100% Mass Gainer? The Ultimate Guide for Bulking Up
                                
                                
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                                    4 min read                                
                            
                                In a 2024 study, researchers noted that mass gainers can significantly help individuals in a caloric surplus meet their daily energy requirements to gain weight and build muscle. A 100% mass gainer is a concentrated dietary supplement packed with a high ratio of carbohydrates, protein, and other nutrients specifically for this purpose.