Eating
I don't think it really makes any difference except for the fact that you would be more relaxed sitting and therefore I would think clamer and not in a position to shovel the food in. Usually when people eat standing they are in a hurry or preoccupied with things other than eating so wouldn't pay as close attention to chewing properly and waiting between bites. Myself I find it much easier to correctly eat when I'm sitting and relaxed, I can't eat much so I want to enjoy the little bit I have.