I've only start bjj for about 2 weeks, so sorry for the lame question. I'm only 140 pounds, and i roll with a guy (noobie also) that is 200pounds. Whenever i have him in my guard he always grabs his right wrist and drives his forearm into my throat. Pretty lame choke, but the guy is strong and heavy so he taps me. Any help on how to get out of it? preferably without using a gi.