http://www.kqed.org/.stream/anon/radio/quest/2010/12/2010-12-13-quest.mp3
If you plan to take any long plane trips this holiday season, here are a few things to keep in mind: jet lag, scientists say, often hits women harder than men. The direction you're flying matters, too. Jet lag is worse when traveling from west to east. In fact, studies suggests that jet lag can do a lot more than just wear us out