If you understand the function of the muscles in your back, you should be able to train them in the fanciest gyms in the world -- or even in the desert or lost at sea. Here, Fitz teaches you about what your back does and offers some neat exercises you can do with a variety of equipment.

The cliff hanger in this lesson: How do you use another person as a prop and how do you use this technique to get a kiss?

For more fun training videos with fresh ideas on how to use all sorts of training equipment, click here.