I had my 4th Muay Thai fight last night. 5x3 minute rounds and it went the distance and I won by uni dc. I noticed during the second round I began to feel tired. Though I wasn't out of breath at all, my muscles just felt very heavy and though I was rattling my opponent with shots I couldnt put together combonations that were long enough to put him away even though I knew I could, I couldnt due to my muscles feeling so tired. In the lead up to the fight I did 2 HIIT sessions a week on a spinner (15 seconds slow, 30 seconds fast), 2 Barbell complexes a week and 2 30 minute sessions on a cross trainer a week. Then trained every day too. So my question is is, Was it a problem with my conditioning in this fight or was this just my bodu dealing with the adrenaline dump badly. I never felt out of breath in the fight it's just my muscles. I was nervous about going into the fight as I was coming off my first loss. So what do those of you who fight or are fitness buffs think?