Brilliant people in science, business and every other field know this rule and use it in their daily lives. Nike CEO has a llama farm where he goes to catch his breath and focus on something other than his cognitive thoughts, of which he has many. After spending time with the llamas he unwinds and has a clearer head for more creative thoughts to be born.
Sometimes the best solution to a nagging problem occurs to you after a an exerted jog. When the solution is suddenly there without any effort on your part and that is because you made room for your right sided brain to kick in, your creative side.
Most scientific discoveries were made in the we hours of the morning when you were still dozy with sleep and your thinking mind has not yet awoken. Ask Albert Einstein or Marie Curie-Sklodowska.
In other words to find your mind you need to lose your head.