Yes he looked so out of shape before the first Serra fight...
GSP has looked exactly the same his entire career. It's not like his skull got all enlarged or went from skinny to huge later in life like Anderson.
Very muscular guys who got off the sauce had a lot of that muscle mass melt away very quickly (look at Reem and Vitor), the fact GSP came back and has passed many random USADA tests while still maintaining that physique is just another notch in the natty GOAT's belt. He is just a jacked white boy and you all need to deal with it.