i don't thinks that's possible =/
You cannot lose 18 lbs. naturally in 4 days, it is just not healthy. The only way that one could lose this amount of weight would be through surgery.
You can loss 18lb in 4 days by eating right and exericising more. It help to lose 18lb with a friend it gives you more endurance
http://www.everydiet.org/diet/18-pounds-in-4-days This site gives you information on how you can lose 18 pounds in 4 days. However this is never a good idea to attempt and losing weight should be a longer process then four days for it to be healthy for you.
Eat healthy and exercise.
you have to lose 6 pounds
Short of radical surgery - you can't.
get on the tredmil bumm
if you eat more smaller meals more often you can lose 2-4 pounds a day.
120 stupid
Obviously - reduce the amount eaten and drank, exercise more.
It is, but unless you are very overweight or overweight, this is not safe.
Why do you want to starve?It's just impossible!