Dr. Spencer Reid:  _ 5.3 _ in the morning , East Coast time . You do n't seem tired at all
David Rossi: I am not tired . I am a night person
Dr. Spencer Reid: Speaking about that : you may want to reconsider revamping your circadian clock to more traditional chronotype !
David Rossi: Yeah , I 'll put that on my to - do list
Dr. Spencer Reid: No , seriously ! Studies have found that at night owls show reduce integrity of white matter in the brain compared to early risers
David Rossi: Well , I appreciate your concern , I am very happy with my brain just like it is !