hahahaha, yeah "shiftedshapes" every "normal adult male" i know has arms bigger than their head.
and you know that because you like to use a tape measure on your bodyparts, but people can't tell it's muscle. To look muscular you need contrast. Small at the joint, relatively bigger at the muscle. much wider shoulders than waist.
Now that's cosmetics.
More importantly though you will be more functional (much better strength to bodyweight ratio, and possibly better strength overall) better stamina, and a LONG life