Remember these rules and tips, which can help you quickly reduce your waistline by more than 3 cm in 12 hours ...1,drink more water and less carbonated drinks. Carbonated drinks and drinks with high sugar content will make your stomach swell like a balloon. 2. Don't eat French fries often. Salt will retain water, especially before the physiological period. Stress and canned food are also high-content foods. Give your chin a rest and don't chew gum all the time. Chewing gum will make you swallow too much air, so your stomach will swell. 4. If you feel that your bowel movements are not smooth, drink more coffee. A cup or two of coffee helps to relax the bowels. 5, underwear corset. A corset underwear, high waist corset or abdominal belt will make people look thinner by an inch or more. Underwear has a good abdomen-tightening effect, however, excess fat will be highlighted in tight underwear, so avoid wearing tight underwear. 6. Choose the clothes that suit you best now. No one, big or small, will read the label of your clothes, but if your clothes are too tight, you may expose your stomach. So, show the best part of your body, attract others' attention and divert your attention from your fat abdomen. How's your arm? Then wear a sleeveless dress. Leg symmetry? Then wear a mini skirt. With charming shoulders? Then wear a thin sling or a top without a sling. 7. Wear your color. Whatever color it is, let it shine on you. Uniform color (same color) clothing collocation, such as coat, short skirt or trousers, shoes, will show the effect of being elongated. 8. Choose fabrics that don't protrude from the abdomen. Silk, rayon, knitted garments and sweaters with rough surfaces usually work well, making the abdomen look flat. 9. Don't forget to put on high heels. Wearing high heels at the party will have a good effect! Let you always remember to remind yourself to tuck in and make yourself look tall. 10. Exhale when lifting shoulders. Reduce the air pressure in the body and let the abdominal muscles fully participate in exercise.