Relax and let it digest. Don't treat eating lunch like a bad thing. It keeps you alive! ;) When you feel you have energy to move, go for a walk. Are you worried about the diet? Big breakfast, medium lunch, light dinner. If you have a large dinner, then it goes straight into your body while you sleep!

knead your stomach for about 10 mins ,then take a short nap within 1h,

Never have a nap after meal.

drink a lot of water whenyou eat is only for the people who is on a diet

drink lots of water with your meal, not only is water good for you but it will help you feel full and keep from overeating (at big problem in America!)