I'm a 27-year-old male that is approximately 5'3-5'4 in height. Over the past 3 years I dropped 90 or so pounds (227 lbs to 137 lbs). All the weight was lost through diet and exercise (walking). However, I have at least 2-3 inches of excess skin that hangs in the abdominal area. Can stomach crunches or exercises resolve this problem, or is surgery the only possible solution? While I have no plans for surgery at this juncture, I might consider in the future but would prefer an alternative.
Note: I am aware that loose skin is normal with significant weight loss.