Yeah always match your round duration in training. My first exibition my schedule lines up with the MMA guys, and they were all doing 5min rounds. Come fight time, I wasn't used to the 2min balls to wall intensity, as 5min rounds were fairly laxed in comparision. Do both types (LISS + HIIT type cardio). You need to work both energy systems. HIIT for the intensity, and LISS for the overall volume Keep your skillwork: padwork, bagwork, sparring sessions, etc with 3x3min w/h 1min rest. You can do it in sets if you want, do a 3x3, then take 10min off, and get back to another "set" I compete in MT and the rounds are 3x2min. My exhibitions and first 2 fights, my mistake was doing pure LISS and getting shocked by the intensity. First exi. I gassed at the end of the 1st (lol). I just figured maybe I needed more LISS!... My 3rd fight I tried something new and did nothing but HIIT type cardio to match the 3x2min intensity. Around mid of the 3rd I gassed from dropping LISS (helps work overall cardio), and for some strange reason the judges marked it a tie and brought it to a 4th where I had nothing left. My strikes had no more sting to them at that point.