Originally Posted by Lenny2

Well I'm no expert by any stretch of the imagination....but a championship boxing match is 15 rounds times 3 minutes....and when you clinch to try and rest the ref breaks it up.
I'm not saying it doesn't take any energy to grapple on the ground, but alot of times you can tell those guys are tired and in guard trying to catch their breath. You don't get to do that in boxing.