So, you want a full body workout and have only, say, 10 minutes? Try this twice (BJJ)

http://www.youtube.com/watch?v=fyZCfrCfjis

I tried. Don't look as smooth? Can't climb the rope with your arms alone? Before you get done on yourself, this guy is a black belt in BJJ, and a very respected practioner.

BTW, that is Sergio Silva, who has some sick jiujitsu.

Don't knock it before you try it. Aside from building up core strength and conditioning, you get a great cardio workout.

Edit: Anyway, I just thought that this was a pretty fun video. And it is a good alternative to doing drills for half an hour for those who get bored easily.

We had open mat today, and I sparred for about 2 hours, with about 15 minutes total in breaks. Also sparred with several guys with between 70 and 150 pounds on me. That ended 6 hours ago. I still feel dehydrated.

I was doing no gi, and we were going pretty hard. (Some guys were doing gi bjj, but I prefer the no gi stuff, since it is more useful for MMA.) The trainer has a Gracie Barra background, so we do both.

Boxing is different. If you spar for too long, you will get seriously hurt because you are going to make a mistake, and you are sustaining too much impact. I've never done more than 10 rounds sparring in any one striking session either, and having done that many rounds in a session, I can honestly say that after 15-25 minutes (depending on the sport), I don't think that I could throw another substantive kick or punch (I could probably manage an elbow in the clinch), and that my defense at that point consists primarily of either clinching and holding on for dear life, or putting on earmuffs. In grappling, you don't run the same risk of injury, and the sessions are not as kinetic. As long as you stay hydrated, you are good to go. And a minute or two off the mat stand you in really good stead.

I know that there is always some stupid debate about what is tougher to do, MMA, BJJ, or boxing, and I would say that it's comparing apples to oranges to pears. IME, in MMA (there are sessions of grappling, striking, and a few variant combinations of the two), you probably get the best all around workout because you switch levels so much, and have to adapt to a variety of situations using a variety of muscles and skills. In gi BJJ or submission wrestling, you get core strength and conditioning to just go and go, and in boxing, you get crazy cardio. I guess that if I were to make an analogy to other sports, MMA is like doing a triathlon, BJJ is like running a marathon, and boxing is like sprinting. They are all strenuous, but not particularly comparable.

I do a variant of this. I jump up to a high pullup bar, do a pullup, land, kick out, do a pushup, tuck back in, repeat. It's a variant on a sprawl drill. I've heard it called a marine pullup.