What are the most important precautions to take before and after liposuction surgery?

I have a question for those considering liposuction. What should I pay the most attention to before and after the surgery? In particular, I am curious about any lifestyle habits or foods that should be avoided during the recovery process. Additionally, I would like to hear tips or experiences from those who can help reduce swelling or pain. For instance, if you could share any specific medications or care methods that were effective, it would be of great help.