Avocado, chia seeds, peanut butter, whole milk.... These are all common ingredients that are used in protein shakes - and these are also foods that are killing your gains if you're drinking that protein shake post-workout.
So why are these foods so bad to eat after a workout?
I'll give you a hint.... Fat.
But if you want a more in-depth answer to that question, you'll have to listen to Next Gen Radio - Episode 82: Muscle Building Foods that Kill Your Gains