I'm noticing that a lot of people are mentioning protein shakes. My only experience with such a thing is from when I was in my early 20's and trying to get strong for a certain career move in the Air Force (I'm female, small, and have always been weak for my size.) I started strength training and reading muscle magazines. I got this stuff called Joe Weider protein powder, which you were supposed to mix with orange juice. I remember that it smelled like a mountain of moldy toenail filings, and it gave the juice a thick, slimy texture. It was so revolting, I just couldn't bear it. The people in the ads were always smiling as they drank it, as if wasn't horrible, but I can't imagine that they truly liked it.
But nowadays, regular people talk about drinking protein shakes as if they are palatable. Is a modern-day protein shake something significantly different from the old Joe Weider powdered toenail filings?