Babies take lots of naps and as it turns out they need them for more than just energy. Researchers have found that naps help babies learn faster. Doctors took the 6 to 12 month old babies and taught them how to play with a puppet. Then they split the babies: Half of them slept within four hours of the lesson, and the other half had no sleep or fewer than half an hour. It turned out that the babies that slept all remembered how to play the game with the puppets, while no babies in the group with little to no sleep remembered the task. This puts a new meaning to the term “sleeping like a baby.”