This has to be the biggest frustration in Brazilian Jiu Jitsu!
You smack, bump, and get ready to roll...Then you use crazy amounts of energy to pass your partners guard!!
What happens next?
Two seconds later he is back to guard and you are EXHAUSTED!!
Even Worse, you get your guard passed by a bigger and stronger opponent and get your face squashed and you feel helpless because there is no way out!
There is no greater frustration then feeling controlled and dominated in BJJ!