User blog comment:Omega natsu2/Episode 179: Gray vs. Rufus, Review./@comment-24744891-20140426151857/@comment-7418318-20140426161851

Yes, the previous anime team did slim both Natsu and Gray down quite a bit. In the movie and the current anime, they restored their muscles back to what they were in the manga, but I thought that was already apparent in 176, when Natsu and Gray were pulling on each other's collars before Lucy tried to calm them down.