I disagree with this completely!
In any sparring, even MMA or UFC type there are 'rules' in real fights there are no rules. If you are skilled in grappling and you are in a tussle on the ground unlike in the ring/octagon there are no rules to say someone else wont start laying the boot in! You have to be prepared for the unexpected you just dont get that in sparring!
I love martial arts and will practice them until the day I die but they all have limitations unless you practice under adrenal stress and no rules!
So are you saying you practice full on with no rules? I doubt that. Because unless you do nothing you do will somehow be better. ALL practice has rules. I'm familiar with the Bulletman, FAST stuff, having people scream and yell at you is great, adding in odd environmental conditions is great too, and you can make that a part of sparring/rolling for self defense, on the other hand beating on a dude in a thick heavy suit with restricted movements is not somehow superiors to actual sparring. And I don't care how many rules there are, or who is reffing, when you are sparring, really sparring you will deal with some adrenaline for awhile and learn to handle adrenaline well because someone is HITTING YOU FOR REAL. I've seen guys get knocked out and choked out more than once in sparring and rolling, I've even been knocked out once or twice. That is scary to face. I don't need someone to bite me and pull my hair to experience an adrenaline rush in sparring, and learn to overcome that (as well as the adrenaline rush that comes with competition and is much more pronounced than in practice). Psychologically, that adrenaline dumb that comes in competition or your first day doing hard sparring with a good fighter is really no different at all than what is experienced in a street fight. the only difference is environmental conditions which an be adjusted around the sparring session. Have you been in the cage, or competed n some form of NHB, submission grappling, kickboxing, or other similar competition? If not how would you know what that feels like and how close the feeling is to the adrenaline dump faced in a street fight? Now, remember, this thread is about the adrenaline not specific techniques to watch out for on the street vs. practice.
Were you aware that in the Army our close combat system is based entirely around BJJ and kickboxing, and the primary training methods are drilling and sparring/rolling? There's a reason for that (i.e. it works). Now we add unique scenarios like throwing in a training knife, or using our skills while going through rooms, but the concept of force on force training between two people is still there. We don't train by beating on a guy with a thick suit and a massive puffy hat on who acts out street scenarios and provides half assed pushes and grabs (which is what I've seen from all of the FAST stuff). I'm sure that stuff doesn't hurt any but it's not really the optimal way to train honestly. Some of that acting out of tense conflicts as far as the psychological phase is concerned can be good sure, but to brush off sparring/rolling because it doesn't involve "no rules" is absurd when we both know you don't train with no rules agaisnt someone really trying to hurt you and the bulletman fighting stuff is kind of the estranged 3rd cousin twice removed of sparring, it's just a weaker version of it. Now, the surprise part is an issue, but you can't really do much to actually train for that. And in that case awareness and avoidance comes into play.