That also means that eating more meals (daily calorie load the same) does not âspeed upâ your metabolism either (like every fad diets tells you to do). There is no solid evidence that six small meals a day instead of three will speed metabolism ~ New York Time Online 2010. In fact, it seems that your body is more optimally hormonally primed for fat burning in the morningâ¦something a big breakfast to âfuel upâ will only shut down.