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.
Maybe you could start with smaller bouts of exercise instead of 50 minutes. Start walking for 5 minutes per day and as you feel stronger increase to 10 and so on. Make sure you eat something about 30 minutes before exercising, like a banana, yogurt or granola bar. If you are low on glycogen (stores of carbohydrates in muscle), it could increase your tiredness after exercise. If you continue to feel tired without a good reason, visit your healthcare provider for a full blood work-up. Certain nutrient deficiencies, like anemia, can also make you tired.