It would be very rare to require a blood transfusion after a tummy tuck. If your lab tests are all normal and you don't have a condition that predisposes you to bleeding, the risk of needing a blood transfusion is very small. A healthy diet and exercise are good habits in general for a healthy lifestyle. I don't have a specific requirement that patients' go to the gym for 6 months prior to a tummy tuck.
No, Tummy tucks do not require blood transfusions. To obtain your best results, you should be in good health, and have BMI of less than 30. Have a consultation with a board certified plastic surgeon to discuss tummy tuck surgery and/or surgical options that are right for you. Best wishes.