Sleeping positions after a BBL are important to ensure proper healing and optimal results. It's wise to avoid sleeping on your back for at least 2 to 3 weeks after the surgery. This is because pressure on the buttocks area can affect the fat graft survival. Instead, sleep on your side or stomach, use pillows for support and to minimize pressure on the buttocks. Follow your surgeon's specific post-operative instructions, as they may vary based on individual cases and surgical techniques.