One of the best tip I can give you to fill up your stomach with zero calories is to drink plenty of water! Water easily fills up your stomach and makes you feel less hungry but on the downside you need to urinate, but there are more than 1 way to get zero or even less calories and still feel fill up!
I lost 30kg in 6 months with Weetabix and Water, read my previous post for full detail at How I Lost 30Kg in 6 Months the Best Diet Plan Ever! Water is the heartiest drink in the world and it has zero calories, it is known to be the only drink that has zero calories!
Eating makes you feel fill up which in other words means consuming calories, but what if you could feel up without consuming calories? Water is an option but to much water can be dangerous as salt levels get diluted therefore drinking 2 to 3 litres a day is ideal but you should not exceed more than 5 litres a day.
Another way to consume less than zero calories is by eating negative calorie foods. Celery is a negative calorie food type but there are others. Negative calorie foods simply means that the amount of calories provided in the food is less than what is required to digest that food. For more in-details read my earliest post on Negative Calorie Foods and Weight Loss!
Another good way to lose weight fast is by switching to stevia (a sugar alternative) which is 300 times sweeter than regular sugar but it has zero calories! I have also wrote a blogpost for stevia here it is Stevia the miracle substance – zero calories!
So you see there are plenty of ways to reduce weight fast and to feel less hungry while fasting or dieting. Diet Plans works and it should be done along with regular exercise for better and quicker results. Eating less than 1200 calories a day is dangerous. You should eat at least what your BMR or basal metabolic rate is. This number measures the amount of energy (calories) your body requires in order to survive (breathing, blood circulation, etc).