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Can a Midday Nap Make You Smarter?: Study Shows Adults Who Nap Learn Better, Perform Better | Nap 'boosts' brain learning power | People learn more after a siesta, say scientists: Psychologists say sleep clears the brain's short term memory and makes space for new facts to be remembered

Singing 'rewires' damaged brain: Teaching stroke patients to sing "rewires" their brains, helping them recover their speech, say scientists

5 Things That Will Make You Happier