One of the first things I learned from Dr. Jack Kruse is resetting hormones with 50 grams of protein within 20 minutes of waking. That does work.

Though, without a chef on staff, a big smoothie was the only way I could consistently do that, as sick as I was.

I think it's that casein is heavy in peptides, not so much in others. Like B vitamins, we need a good base, then add specialty items as needed.

Based on that, I use whey protein and Greek yogurt.