Researchers say it is possible to wake up smarter than you were the day before!
In a new study from israel, researchers played a particular tone when adult subjects were sleeping -- and followed that tone with a pleasant or unpleasant smell.
They found the participants reacted to that tone when they were awake, by either inhaling because they expected a pleasant smell -- or cutting their breathing short for an bad smell.
Experts say this is proof people can learn new information while they are asleep.