I took one of those Advantage shakes with me to have on the plane (14 hours traveling yesterday, argh!), but I had a bar once and it made me feel awful, and I was worried that the shake would do the same. Under the circumstances maybe I should have just drank it anyway, but I couldn't bring myself to. I had a small bag of macadamia nuts and the chicken out of the little chicken sandwich they gave us at lunch, and that seemed to get me through. Still, I woke up hungry this morning!