So I've been training a year and a half at a well respected school. 4th stripe white belt, 6'1/180lbs. I'm at the point where I can survive entire rounds against some of ourblue belts around my size,(though some other blues smash me). Today a 245lb dude walked in off the street. He was both strong and fat, about 5'10. He was jacked with a belly basically. Starting from knees, he threw me on the ground and got side control on me. My instructor said he had no prior experience, but he kept me flat pretty well. I had a hard time even grabbing half guard. I gassed eventually and tapped because his belly was smothering me and I couldn't breathe. It was the first time I felt ashamed of having any stripes on my white belt. During drilling the guy didn't know what he was doing, so my ego is hoping he had wrestling experience of some sort. 2 questions: 1. At what belt should one be a able to handle stronger and heavier opponents? This was a huge ego check for me. My guess is around purple belt, you can overcome size and strength differences? 2. Any tips for escaping when you're getting smashed? My instructor wasn't happy I even ended p on the bottom. But honestly I felt like a rag doll.