Don't, MMario. You'll be busier than ever AND you'll end up dealing with doctors, inhabiting hospitals, and trying to circumvent surgeons. Everyone will say, "Oh, he's retired so he isn't doing anything else" and even if you say NO!!! loudly and often you'll find that they are deaf.

Here's a better way: agree and make a botch of it. Then they won't ask you again and your life will be your own to do what needs to be done with the medical types (see above).