Liquid only post workout. The rest should be whole food. Your ancestors in the middle ages didn't have protein shakes. They killed a fuckin lion and then ate that post workout. Gurantee there were big guys walking around back then considering physsical labor was a way of life. I'm sure your kidneys would appreciate a piece of cow rather then a pile of chocolate processed cheese biproducts. Not to mention whey actually spikes your insulin which if spiked the wrong times, could contribute to rapid fat gain.