The cabin crew’s secret to avoiding jet lag.
I eat nothing on flights. I’ve talked to a lot of stewardesses about it, and it’s a stewardess secret. Ten years ago, it was [a cabin crew member] on Singapore Airlines on what was, at the time, the longest flight in the world (17 hours from Singapore to New York). She told me that her tried-and-true trick was not eating in-flight. Basically, at superhigh altitude, your digestive system shuts down completely. Someone said to me it’s like being under anesthesia. So when you get off the plane, everything restarts and [your digestive system] has so much more work to do and so it makes you more tired.
Dispatches From The Front 