a dose of rose! quoting http://www.forbes.com/feeds/ap/2007/03/11/ap3505199.html

German scientists used medical students as their guinea pigs, having them play a computer version of a common memory game: They turned over pairs of cards to find each one's match.

Some played in a rose-scented room. Later that night, while they were in a deep stage of sleep known as slow-wave sleep, researchers gave them another whiff of roses.

The next day, the rose-scented sleepers remembered the locations of those cards better than people who didn't get a whiff - they answered correctly 97 percent of the time compared with 86 percent.

interesting would be to see:
1. how many chaps actually do this rose scent exercise
2. how many (including chaps of 1) followup on this study
3. how many chaps of 1 stick to the rose exercise, even after smelling success :P  ¶ 11:40 AM