If you want to be thin, you must persevere. Besides not eating snacks for three meals, you can eat some fruit. Breakfast is very important. You can eat some eggs, vegetables and drink some porridge. Don't eat too much at any meal, and eat less greasy food such as fried meat.

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You can do 10 sit-ups every day, and your abdomen will be very strong. Sit on the stool and lift your right leg parallel to the ground. Hang in there. Switch legs.