Hey, I used to train boxing a lot until a year ago, then I found out I was born with only one kidney during a routine check up, which has made me a lot more cautious. Should I pick it up again? Does anyone have similar experience? My doctor basically told me to be careful, not much else. She didn't forbid me to train, but as I said, I'm more cautious than I once was. Is there some other martial art where strikes to the kidney aren't as common? Preferably stand-up fighting, but I'm open to anything.