It might be a long shot, but you should probably check your blood sugar. Especially if you are overweight, or have a family history of diabetes.

Postprandial drowsiness can be a symptom of, at least, impaired glucose tolerance. me too eat less at mealtime. Have you been tested for diabetes? thats because of youre digestive system dont worry but try to walk after you eat to keep active Well, it depends. Do you weigh alot? Do you always get sleepy after each meal? Do you eat alot? I guess you should eat, wait about 15min, then go exercise for about 30min-1 hour. WHEN DID YOU LAST HAVE A FASTING BLOOD SUGAR DONE? Me too. My doctor told me that some people have this happen to them when they eat foods with sugar. Even natural sugars that are found in food. So I try not to eat too much sugar during the day at work so I that I don't feel sleepy in the afternoon. Try to cut down on your sugar intake and see if it makes a difference. if you are eating a lot of carbohidrates

you will get sleepy and yes get checked for diabetes too See a doctor and try exercising eat less and concentrate on studies So do I, when you eat it's like taking natures sleeping pill. This is perfectly normal.