Because it has the most complete amino acid profile which is great for muscle growth and recovery. (fitmole.org)
These are all classified as class 1 proteins and provide complete amino acid profiles that is necessary to ensure proper muscle repair, recovery and growth among fulfilling other functions in the body. (blog.oziva.in)
• Proteins with complete amino acid profiles made from the bran, endosperm and germ layers. (axiomfoods.com)