Another idea when you're in a pinch could be to get a container of yogurt at a 7-11 type of store. Even if it isn't lowfat and low-sugar, I think it would come closer to fitting in with your prescribed diet. Some fast food places even offer yogurt now, too!

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Life goes faster on protein. ~Martin H. Fischer
A bear, however hard he tries, grows tubby without exercise. ~A.A. Milne
Banded 12-19-06 by Dr. Terracina, Newport News, VA 5'4" tall--286/221/131