How 40 winks can improve the memory a hundred fold - Daily Mail 21st February 2008

Power naps - the daytime snoozes favoured by Winston Churchill, Lady Thatcher and Albert Einstein - can boost your memory, scientists say. A study has shown that falling asleep does more than refresh the brain, it also improves recall. Dr Olaf Lahl at the University of Dusseldorf, Germany, who led the research, believes that it is the process of nodding off - when recent events are replayed in the mind - that is so beneficial, rather than the sleep itself.

Link to Article

Additional Story

Six minute nap 'may boost memory' - BBC Health News 21st February 2008