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.
Overview. Food provides you with nutrients and vitamins that energize your body to get through your day. Unfortunately, some people find that they feel tired after eating a meal. This can be a sign of a medical condition or food allergy -- see your doctor if you experience fatigue after you eat.ood Allergies. If you are eating properly and still feel tired after meals, you might be allergic to certain kinds of food. Celiac disease is a food allergy to gluten, which is found in many commonly-consumed foods such as wheat, barley and many condiments.