In both Fullmetal Alchemist (2003) and Fullmetal Alchemist: Brotherhood (2009), there are instances of Alphonse Elric saying what he can't wait to do once he gets his body back. He usually states things that only humans/living creatures can do that he cannot, such as eating and smelling.
Since sleeping is something that only humans/living creatures (i.e. - not a suit of armor) can do, does this mean that Alphonse cannot sleep? Does he just sit there all night on Ed's floor? Is this talked about/approached differently in the two shows?