clipped from selfpursuit.com

“Take 20-30 minutes out of your day to think about nothing. But don’t sleep – you’ve got to meditate. Sit still, reduce sensory input, and try to focus your mind on something like a calm scene or a color (to begin with thinking about something rather than trying to think of ‘nothing’ is easier). A study at the University of Kentucky revealed that subjects who took a late-afternoon test after meditating for 30 minutes had better scores than those who napped for the same time.”