In my gym, i wind up rolling with guys like, Frank Mir, and Heath Herring. Not only do they train there, but alot of other quality "known" fighters train there as well. I train there because I heard its the best, but damn, i get gassed out in no time, and I wonder how much i'm learning training with guys that own me in like 15 seconds. 1st of all, i have no jiu-jitsu training prior, and all my fights were in ice hockey. any tips?? increasing my energy, gas??