Lie on your back on the floor with your hands beside your body, then bend your knees and relax your muscles completely. Inhale and exhale slowly and draw the air only with your lungs.
After inhaling, stretch your stomach muscles as much as you can, then exhale as hard as you can. Feel the stretch in your abs nicely, and hold the position for 10-15 seconds then exhale again.
The abs should always be tense, so make sure to take short breaths in between. When you exhale, relax your abs and breathe normally, then release all the air from your lungs and exhale again.
This amazing technique will provide incredible results. Try it yourself and you will reduce your waist size in no time!