1. Diet control: Try to keep the diet light and digestible, and avoid overeating or eating greasy and indigestible food. This can reduce the discomfort and digestive burden after meals.

2. Try to sit on the ground floor: If you have to sit, try to sit on the ground floor. Sitting at the bottom of the valley means sitting near the ground, such as sitting on the edge of a chair or on the floor, which helps to promote digestion.

3. Keep a good posture: Whether sitting or standing, it is very important to keep a good posture. Try to keep your back straight and avoid excessive bending or bowing, which will help reduce stomach pressure and discomfort.

4. Do simple exercises: Even if you don't have time to stand up and exercise, you can still do some simple exercises to promote digestion. For example, you can do some abdominal stretching, rotation or gentle flexion and extension exercises to help promote blood circulation and digestive function.

5. Pay attention to relaxation: It is also important to relax properly after meals. You can find a comfortable place to relax for a few minutes or try some deep breathing or meditation exercises to help you relax and calm down.

Please note that the above are some suggestions, which should be selected and adjusted according to personal comfort and physical condition. If you have persistent postprandial discomfort or digestive problems, please consult your doctor for professional advice.