On the day of the liposuction surgery, the physician will mark your body with a pen to indicate where the fat is to be removed. Then you will receive anesthesia, that is medicine that prevents you from feeling pain. Some physicians use only local anesthesia, that is, anesthesia that they inject with a syringe or pump into the area where they will do the liposuction. The anesthesia medicine is injected along with a lot of fluid, usually buffered salt water and epinephrine, a drug to reduce bleeding. Large volumes of liquid may be injected, until the skin is very firm. If your physician uses only this kind of local anesthesia, also sometimes called tumescent anesthesia, then you will be awake during the procedure. Other physicians use local anesthesia and a sedative that can be taken by mouth or injected from a syringe. Still others prefer to use general anesthesia, that is to use anesthesia that will put you to sleep during the procedure. This is usually done in a hospital.