How Sleep Transfers Memory During Sleep

During sleep, the brain replays information that you've recently learned. Sleep doesn't just simply strengthen individual memories but also interconnects those new memories together. The next morning is a revised, mind wide web of information within the brain. You can come back having extracted and divine creative novel solutions to previously impenetrable problems facing you. And it's probably the reason we now know this, for example, that will actually provide almost a threefold advantage in problem solving over an equivalent time spent awake.