Many scientific or health organization accept sugary carbonized beverages as empty and harmful calories. An average soda of 12-oz can contain up to 150 calories. Think you are drinking two bottles of soda daily, this adds 2100 extra calories to your dietary every week. If you are not good with calories, think that way, you should walk about 21-22 hours per week in order to balance calories that you are taking by 2 sugary sodas per day. You can try to replace sodas by mineral water.