re: BJJ practitioners: any concern about carotid artery dissection?

Other than the philosophical advice..

As a bjj blue belt, either:
1) You are being too stubborn and need to tap earlier. You will be submitted 100s of times so there is no sense trying to tough it out once you are caught in a good choke. Just tap and reset. You’ll get more reps in and progress faster anyway.

2) The person you are rolling with is out of control and dangerous. If you get the feeling that he is trying to crank a choke too hard or is just overly aggressive in general. End the round and say I’m done rolling with you. You need to trust the people you are training with.