Overeating causes the stomach to expand beyond its normal size to adjust to the large amount of food. The expanded stomach pushes against other organs, making you uncomfortable. This discomfort can take the form of feeling tired, sluggish or drowsy, your clothes also may feel tight, too.
Sometimes your eyes are bigger than your stomach and you end up eating more than your body can handle at one time. When you eat too much, your digestive system has to work on overdrive, causing a spike in blood sugar, an upset stomach, and feelings of lethargy.
