OLD SCHOOL BELIEF For a long time there was this idea that 30 grams was the perfect amount to consume after a workout because anything over that was wasted. But a few years ago some nerd in a lab coat told us 25 was the maximum effective amount (I can say this because I am a nerd with a lab coat. Seriously, I am wearing mine right now). It was also believed that around 20 grams of whey was the amount needed to really get a “boost” in muscle protein synthesis post workout by protein ingestion.