Jiu-Jitsu is a hard sport. I don't care if you do it "seriously" or "casually", either way, it's a tough sport. It sucks because you get beat up all the time. It's also really fun because you get to beat other people up too! (and I use the term "beat up" metaphorically as it relates to grappling...even though sometimes it IS literal). But the really cool thing is that you can tap, stop and start again! It's like a video game with quarters lasting as long as your partners (or you) last! When I tap or tap someone, it's like, "cool"...okay...slap hands and go again and try to get past the level you got to last time before you got killed! It's like hitting the credit button...only it's endless because it's already been automatically withdrawn from your bank account for the month LOL!!!
So back on topic...jiu-jitsu comes with a lot of injuries. No matter how you slice it (see food reference there?), you're going to get injured. Yes...YOU ARE GOING TO GET INJURED. It doesn't matter how careful you are, it happens. Now, you can learn and get smarter and reduce the amount and severity of the injuries. Let's look at one way. There's the old saying "position before submission"...which means that you have to have a good position before you can attempt a submission. So, once you are in your submission position, your opponent will most likely try to defend your submission attempt. So, what do you do (this is assuming that your opponent is getting out)? You can keep insisting on the submission as he escapes, gets to a dominant position and puts you in an inferior one. Now you have no submission and no position (or more accurately, a bad position). Another option is to maintain the position and let go of the submission. You still maintain your dominant position and have the opportunity to set up another submission attempt.
Now...really back to the intended topic, sometimes injuries are not because you got caught in a submission and didn't tap in time. Sometimes the person that gets injured is the one going for the submission. In this case, you can avoid injury by simply letting go of the submission. I remember someone once told me he had a triangle on a much bigger partner and then the partner busted out and up with all his might. His triangled knee tore apart! OUCHH!!!! Now, the guy getting triangled could have done any other number of escapes and not caused any harm to his partner (now, "good training partners"...that's for another day's post). It this case, the safest thing would probably have been to let go of the triangle and just continued rolling.
Everyone gets focused when they train.
Tunnel vision happens and sometimes the ego grows mighty.
Train hard and train smart.
As you train your body, train your mind and tame your ego.
Your body will thank you.