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.
Anemia can happen when your body isnât producing enough red blood cells or the red blood cells donât contain enough iron-rich hemoglobin, says Amy L. Doneen, ARNP, medical director of the Heart Attack & Stroke Prevention Center. That lack of oxygen-rich blood in your body can make you feel tired and weak. While iron deficiency is the most common cause of anemia, other causes include heavy periods, sluggish bone marrow, vitamin B12 deficiency or a lack of folate in the diet, says Dr. Rindfleisch.