...and now I have to work it off

So, I was reading an article on Slashdot about how there are videos on YouTube that are *gasp* not real, but edited content! Shocking, I know. Anyway, it reminded me of a video that was posted on Slashdot a month or so ago that was on YouTube. However, I'm fairly sure this one is not edited, just 4 guys and 8 treadmills. Set to a catchy tune. Here it is:

Enjoy!