if you poor 1 scoop of protein into a cup of water it is considered 100% protein. wouldn't muscle be the same?
The water doesn't count? Maybe the powder can be pure protein. And if it's 20 grams of protein it will still be 20 grams whether it's a cup or a gallon. Would you still think the same if you had to drink a cup versus a gallon? But wouldn't you say that there is a difference in composition if that 20 grams was in a cup of water or in a swimming pool?
Say, I had a cup of water and right next to it a scoop of protein. Now you have two distinct things. One is 100% water and the other 100% protein. If I combine the two distinct items does it now become just 100% protein?
Obviously water counts, it is obvious in the case of muscle as in advance bbing and getting on stage, the days, hours and often minutes before that time, it all becomes a matter of water retention.