Muscle mass before or after body lift?

Weight management and control of an elevated BMI (body mass index) before surgery is important to lower surgical risk and optimize the ability to remove maximal skin. Muscle mass is not going to impact the skin looseness or fat removal process significantly, so the timing of building of muscle mass is not as critical as the ability of the patient to MAINTAIN body weight. We usually recommend you plateau your weight  at some manageable number that subsequently can be maintained within +/- 5lbs after your surgery so that you are not crash dieting for surgery nor having surgery at an unsafely elevated BMI. Muscle building is good for surgical patients as protein intake is critical for wound healing/collagen development.

Thank you for your question.
On patients interested on building muscle ands having more definition . I do recommend on them to stay in their goal weight and start building muscle, but the surgery will be better if you're in the midway of building this muscle, because after the surgery will be more easy to define the areas of concern.
Hope this helps .