We chose the protein blend for Core PRO with optimization in mind. Our mix of cold-processed undenatured whey protein concentrate, cross-flow microfiltered whey protein isolate, and milk protein isolate has a complete amino acid profile that has been shown in research to increase nitrogen retention, lean muscle impact, and satiating ability (the feeling of fullness). This blend has also been specifically configured to provide both rapid and sustained additions to your body’s amino acid profile – meaning your recovery is not only supported immediately after a session, when you most need it, but over time as well.