A good night's sleep may be the best gift you can give yourself this holiday season. New research from Princeton shows that not getting enough shut-eye can be a serious source of memory and learning difficulties. This is because the brain simply stops making certain kinds of cells when it isn't fed by enough sleep.
Researchers found that when lab rats go without sleep for seventy-two hours, levels of a stress hormone become highly elevated and a surge in that stress hormone is blamed for halting production of brain cells in the area of the brain which makes new memories.
Bottom line, more shut-eye opens your eyes to a better memory.