Sleeping is known to help humans stabilize information and tasks learned during the preceding day.

Sleep helps the mind learn complicated tasks and helps people recover learning they otherwise thought they had forgotten, U.S. researchers said. Researchers at the University of Chicago used a test that involved learning to play video games.

Sleep helps the mind learn complicated tasks and helps people recover learning they otherwise thought they had forgotten over the course of a day, research at the University of Chicago shows.

By Michael Conlon CHICAGO (Reuters) - Scientists reported on Friday what they said was the first scientific evidence that people unconsciously gesture with their voices.