Your chances of overeating will be reduced and you are more likely to be satisfied with what you have eaten. If you eat a little of a whole bunch of different things, even after you are quite physically full, your appetite may wish for more of some of the selections it only got to taste briefly. Choosing fewer items means larger portions of the items you do choose. In addition to all this, the fewer kinds of food you eat at one time, the easier it is for your body to digest it.