Of course there are other reasons for getting rid of your saggy, baggy skin. Those folds can quite easily get infected. A large fold holds moisture in and that is a lovely environment for a lot of infections. Some abdominal folds can be large enough to impede movement when walking or trying to exercise. There can be ongoing spinal problems caused by the excess skin folds altering the way you stand and move. These are all valid reasons for doing something about it.
1.Exercise is a first option.
Time spent at the gym, or any other form of exercise that will help build up the underlying muscles, is always the start of your body shaping journey. Getting fit and healthy will make any needed surgery much easier on your body. Some skin folds will lessen a bit.
2. Nutrition needs must be met before, during and after surgery.
You want your body to be good nutritionally as surgery uses up a lot of vitamins, minerals etc while you are healing. Your doctor will check blood tests and advise on any supplementation needed to ensure speedy and good healing. Fruits, vegetables and protein are needed here. Iron and vitamin tablets can help also.
3. You need to reach goal weight and stabilize for a number of months.
There is a reason for this. Every surgery carries major risks. You don't want things done and redone. You wait for a while so that your skin will do any changing that it is going to without help. You are getting as fit as possible for the surgery to go well for you. You may need to save to have the surgery done if it is something not done in a public health system or under your health insurance. Your mind needs to be in the right headspace. Surgery and reshaping your body does not cure everything. You are still you. How you are emotionally may not change unless you have taken the time to work through it. Research on body dysmorphia if you don't believe me.