depending on the way in which you go about it it can be anywhere from 3 to 15 pounds and of course how your body reacts to different 'stratigies' towards weight loss.
1 to 2 pounds a weeks is a healthy rate to lose weight. The first few weeks will certainly be much faster, as much as 5 pounds or so. But you didn't gain all the weight in a few weeks, so don't expect to lose it in a few weeks.
I definatly believe that it is possible to lose as much weight as possible in 2 months. "As much as possible" means the commetment that you put into loosing it.
Starvation is not the answer to achieving weight loss ... exercise is ... lots of exercise. Food is an essential to survival.
To determine how much Omar should weigh after 4 weeks, we would need to know his starting weight, any weight loss or gain goals, and his diet and exercise plan. Generally, a healthy weight loss is about 1-2 pounds per week. If he is following a specific plan, tracking his progress weekly will provide the best insight into his expected weight after four weeks.
stop eating so much, get some exercise
WebMD has wonderful articles about motivation - as does the Weight Watchers website. Unfortunately, you can't achieve anything successfully without self control. And I'm not only talking about weight loss. Is there anything you've ever achieved that required discipline and self control? What did you do to achieve that goal? Perhaps you can apply that same passion to weight loss.
It is possible, but it is also very unhealthy. And note that probably half of that weight would consist mostly of water loss, which doesn't affect your appearance that much and can lead to dehydration issues.
Perhaps you are not eating right. Exercise will mean nothing if you are eating too much or too unhealthy.
Safe weight loss is 1 to 2 pounds a week, so that would be 12 to 24 pounds in 12 weeks.
The most effective plan for natural weight loss is to eat healthy foods, as many whole foods as possible, and limit unhealthy foods/drinks as much as possible. Any diet changes need to be combined with exercise for the most optimal results.
She puked so much that she loss weight.
The safe maximum weight loss is two to three pounds a week - this does not result in baggy skin or dehydration, and will give you a much better chance of keeping the weight off. Eight weeks of losing two pounds each week will end up with sixteen pounds lost.