Hey guys. First, sorry for the WALL of text. Please bear with me. I just got out of my second BJJ class, and I'm really loving it so far. I'm relatively small (5' 8" and 145lbs), and I'm outweighed by everyone else in the class, but so far that hasn't really been a big problem. I feel like I'm doing relatively well picking up technique and learning how to move from position to position, etc. Overall, I'm happy with my performance and with my classes. Now, to the meat of this thread. I've always been proud of my mental toughness. When my brother and friends and I would fight/wrestle/whatever when we were young, I won a lot of the time through sheer willingness to keep trying and work my way out of disadvantaged positions. I've never been afraid of contact with bigger, stronger people, and I've always felt like I could take a hit, whether it was wrestling or playing sports or moshing at concerts or whatever. Over this summer, my brother and I and some of my friends started rolling, despite our lack of training, just as something fun to do, and I got submitted pretty often with a variety of joint locks, chokes, etc. I never had a problem with pain or freaking out because I was blacking out or anything. The first BJJ class that I had, we worked on several gi chokes. I was calm while rolling and drilling, and I felt like I had nothing to worry about when the other guy tried the gi choke. When he tightened it in, it was easily the most uncomfortable sensation I can ever recall feeling. My eyes watered, I coughed like crazy, and I tapped before he even had the choke sunk in all the way. I was surprised, but I figured that it was just a first time thing, and I let him try again. Same thing. Later, we drilled the bow and arrow with different partners. Same thing. I feel like the mental fortitude that I've always felt confident in has been very challenged by this. My question, after this INCREDIBLY long post, is this. When you first started training BJJ/any other martial art, did any of you experience anything like this? I'm not planning on quitting or anything like that; if anything, discovering this weakness has made me determined to work on it and make gi chokes a strength of mine. I'm just wondering if any of you were surprised by something like this. Thanks for reading and responding. Sorry again for the length.