How will this allow you to do anything you couldn't do before? It's not like Big Clock keeps you in bed, does it? Does your boss force you to sit in the office until a specific time, even if you started an hour or two earlier?

(Small anecdote: in my first job one of my teammates came in at 5am and left about 2pm. I just thought he's a morning person. But when I asked, he admitted that he wasn't one at all; he just tried to avoid our new boss, because that guy was extremely chatty with him.)