OK guys, I'm a new blue belt (3 mos.) and I still seem to have a problem dealing with larger people, especially when they're inside my guard. I'll get a new white belt and if they out weigh me by 50+ lbs. they be in my guard and just try to smother and stack me, maybe go for some kind of choke. I know they won't be anble to finish anything, but I'm having trouble sweeping or even creating space for my hips. Any suggestions?