Body contouring is a general term that refers to any surgical procedure that alters different areas of the body, whether it is in a massive weight loss patient or not.  Body contouring after massive weight loss refers to a series of procedures that eliminate and/or reduce excess skin and fat that remains after obese individuals lose a significant amount of weight, in a variety of places including the torso, upper arms, chest, and thighs.
Body shaping
Body fat redistribution 
Erection
Limb development
Speech communication
Body memory
Heat transfer
Drug metabolism