It is due to flatulency or gas formation.
1) avoid all sorts of junk foods, fast foods, aerated drinks, oily fried foods. Take mostly vegeterian diet and add more natural fruits and green salads in your breakfast. you can add fresh curd at your lunch and dinner. Add more fibers rich foods to your diet
2) Take your foods in time. Break fast should always be healthy and good one. Dinner should be light
3) Daily morning walk or some physical activities. You can practice yoga
daily for 20 to 30 minutes at morning. It is highly required to spare some times for your body from your busy work schedule.
4) if you are working in IT Sector or mostly sitting job then try to move a around of 5 minutes on every 1 hour constant sitting.
5) Drink minimum 2 to 3 liters of water regularly.
6) Avoid smoking
, taking coffee in empty stomach
7) take one homeopathic
medicine - Nux vom - 200 - 2 times in a day daily after lunch and dinner for 15 days
Hope this will help you a lot