Sagan's small size came with many hazards, but also many benefits. One of those benefits would be the fact that he both requires and uses less energy, meaning that he doesn't have to sleep as long as humans at Min and Miles' size. This didn't mean that he'd lack the human tendency to want to sleep those five extra minutes. With all the movement and discussion going on, it was surprising that sagan had managed to fall asleep, let alone stay asleep. However, as Miles entered Min's room, he woke up. He decided to snooze a bit longer, so that he wouldn't disturb the two.