Some people say its impossible to feel real pain in dreams. I say thats complete bullshit because I feel real pain even in lucid dreams. I was wondering how you stop feeling pain in dreams. Is it just something you have to practice?

Heres an example. I had a dream a few nights ago and I became lucid. I was in some housing estate so I decided to jump head first through the window of a house. I ended up in someones living room and there were 2 guys sitting on the couch watching TV. One of them got up and started threatening me with a knife. I pondered the thought of getting stabbed and I realized I had a fear of getting stabbed even in a lucid dream. I decided to overcome that fear. I opened my arms and said "come on stab me" and the guy went to stab me and I got a bit nervous and grabbed the blade and he sliced my fingers and I felt real pain like I'd actually been cut. Then I let him go all the way and stab me in the belly and I swear to god I felt some real horrible pain that I associate with being stabbed in the belly. Even after I woke up my fingers were still tingling from being sliced in my dream.