Doesn't it?! I think more people should do this at least for 15 minutes twice a day in order to refresh their mind throughout the day. Also, waking up early in the morning and spending at least a 1/2 a hour to 45 minutes thinking about things you need to get done today, and thinking up solutions for on-going problems can be quite helpful in making each day less stressful.
Okay so one time i tried this and the whole time i realized i was thinking about not thinking. But i think after a while it becomes easier. Its kinda like meditating i guess where eventually it becomes natural to think about nothing and truly clear your mind