Although everyone's body is different, in general people can expect to lose one to two pounds a week if they are doing so in a healthy manner, Jim said. So for three months, or about 12 weeks, a healthy goal is 12 to 24 pounds.
Losing weight at this rate ensures that you'll keep it off for the long term. If you have more weight to lose (50 or more pounds), you may lose more weight in the first few weeks, but in general, about a pound or two a week is a healthy target.
Ahead, find out how to lose this amount of weight in three months.