- If you are in Group A, you will use the "rocking chair method." Beginning the first day after surgery, you will sit in a rocking chair and rock back and forth for 10-20 minutes at a time. This will be done for at least 60 minutes (1 hour) per day, until you pass gas for the first time after surgery. The study staff will show the correct method to rock in the rocking chair and give you time to practice while you are in the clinic.