I know exactly what you mea..its hard not to go for the kill entire time..i won 30plus,fights by stoppage..and the ones, i lost due to my lack of patience. And cardio in some instances..but if you can end up in unreal shape and hone ur skills Cain has showed us 25mins straight of literally putting a 100 percent is possible..then again his gas tank isnt human lol...i fought with the kill or be killed mentality..ive tryed pacing myself and i kust wanted to hulk smash with no regards haha...same way in my 300 plus wrestling matches..balls to the wall...anybody who seen me fight says same thing win or lose its nvr boring lol..bk in my ammy days it was literally less reglated less than pride..we could knee elbow kick and stomp head of downed opp in INDIANA..it was very dangerous..theres a vid of my friend adam bass whos a sick boxer 2x gold gloves state champ koing and stomping ufc vet donnie walker...Jeremy horn cage side bout puked..that led to no stomps or kicks to head of down opp in that particular org..adam use to get right with jens andc fisher boxing when we would go to iowa..good but hurtful times lol