Most guys drop out of MMA...
...because of ego issues. People don't want to get their ass kicked day in day out. I started BJJ after years of Thai boxing, shootfighting, Kung Fu and various other styles. My teacher is all of 170lbs and litterally kicked my ass all over the place. I am the only 310lb guy he has ever taught one on one and I can't move like guys half my size but, it is all about learning it ALL. The best workouts are MMA workouts. I train for 2-3 times a week and train at gym 4 days a week and hit back 3-4 times a week and that just KILLS ME!!
RY