Moving giant tires has been all the rage this century, and CrossFit is a big part of that. Batman seems to think it's effective, maybe you should give it a

try.

At this point, so many people like doing CrossFit that it has become a competitive enterprise. Check out a few of the moves these determined athletes pull while on a

field together.

Two of the classic CrossFit moves are dumbbells and pull-ups. One way to combine them is nicknamed "the Fran," as demonstrated above.

CrossFit doesn't leave out the more traditional weight work, it just incorporates it into a mix of other behaviors. Here's a badass lady working with a bar.

Push-ups are great, but add a move and they become supercharged. 

Sure, you can use a rowing machine. But again, a few simple twists can make it way more effective.

Classic sit-ups meet power training in Cross-Fit aerobic workouts. Not only will you up your heart-rate and metabolism, you will be building crazy muscle at the same time, becoming more of an

all-around powerhouse everyday.