with a friend and my bro...we just started last week, but you gotta start somewhere. Anyway, I am 135 lbs, 5'10'', 27 1/2" reach, and currently trying to bulk up.

I was sparring a friend today, he weighs 190, things were alright I was doing alright keeping him away with my jab, took a swing, he saw the opening, hit me on the cheek, and I had no control, I wasn't dizzy, I just got knocked to the ground.. I understand that the weight difference plays a big difference between us, but I was wondering, is there anything I could do to prevent this besides protecting myself more? I'm currently working on balance, but I don't think that my balance could have done much against that.