Duly is defined as at the right time or as expected. An example of duly is a person showing up when they were supposed to arrive. in a due manner; specif., 1  as due; rightfully.  when due; at the right time.
If you eat a high-fat meal, you will feel tired after eating because fat is harder for the body to digest than carbohydrates and protein. When you eat a lot of fat, your digestive system becomes sluggish, and your body sends more blood to your digestive organs so that the job of digesting your food can be done.ood Allergies. A classic symptom of food allergies is feeling tired after eating a food you are allergic too. Common food allergies include gluten (the protein in wheat), dairy products and tree nuts, but sensitivity to any food can cause fatigue.
I would be interested to know what may be the reason for feeling extreme tiredness and fatigue after eating. It does not matter what I eat, how much I eat or the type of food. I eat a bowl of strawberries or a slice of bread, or a meal of pork with dumplings and salad. Even a cup of coffee makes me very tired. Movements after the meal or an after dinner-walk are almost impossible because I am so weak and tired; it's like eating sleeping pills.