The length of your nap and the type of sleep you get help determine the brain-boosting benefits. The 20-minute power nap -- sometimes called the stage 2 nap -- is good for alertness and motor ...

Need to recharge? Don't depend on a cup of coffee -- a power nap will boost your memory, cognitive skills, creativity, and energy level. A short snooze is an economical (and easy) way to boost mental ...