I recently saw these videos on Youtube and i was impressed!!! (note: the first video is for all, the second video is for guys and the third is for the girls)

*to Harder, Faster, Better, Stronger by Daft Punk

This must really be such a good workout. In case u still don't get the lyrics, they are:

Work It
Do It
Make It
Makes Us

Harder
Faster
Better
Stronger

More Than
Hour
Our
Never

Ever
After
Work is
Over

Work It Harder Make It Better
Do It Faster Makes Us stronger
More Than Ever Hour After
Our Work Is Never Over