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.
Rating Newest Oldest. Best Answer: First, only a doctor can tell you if you have this problem (anemia). Second, you generally get pretty tired because iron is the thing in your red blood cells (hemoglobin) that carries oxygen around your body.So if you don't have enough iron, you're not getting enough oxygen, which could cause some issues if it becomes severe enough.If you don't want to go to a doctor to find out, start taking a multivitamin with iron in it, and see if you feel better.Source(s): trista.maye Â· 7 years ago.o if you don't have enough iron, you're not getting enough oxygen, which could cause some issues if it becomes severe enough. If you don't want to go to a doctor to find out, start taking a multivitamin with iron in it, and see if you feel better. Source(s): trista.maye Â· 7 years ago.