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Leonardo da Vinci: Daily Routine

Few people know that Leonardo da Vinci invented a way to spend little time for sleep, but not suffer from doing so. He slept only an hour and a half per day! Many people say that it was the exact secret of his efficiency. Today it is called a polyphasic sleep. Genius Leonardo decided that he spent too much time on sleep and invented his own sleep method. It lies in sleeping for 15 minutes every 4 hours.