Switching it up and trying new forms of protein but don't know if they'll be as effective? Scott Thomas sits down with protein professor Stuart Phillips to learn more about plant protein as an alternative source for building muscle. Find out how much protein do you need with the Optimum Nutrition FREE protein calculator: optimumnutrition.com/en-gb/protein-calculator #proteincalculator #howmuchprotein #howmuchproteinperday #howmuchproteindoIneed