Well, I'm not sure that's a very good idea. Apart from the fact that sleep helps solidify facts learned during the day (not sure whether this is really true or not but from my experience I'd say there is something to it) I remember reading a paper claiming sleep could have a crucial function in cell refreshing and rest even on a molecular basis. In fact, the former physiological and psychiological effect could be very well implicated by the latter one actually.
