Factory sealed DVD</br></br>Product Description</br></br>Daily Planet inspects the human body. We check out the inner workings of our back muscles and learn the science behind balance. Find out what makes us faint?? and how hand gestures affect our comprehension. Understand the layers of our skin and its characteristics. Thrilling experiments reveal how our bodies work and react in the most extreme circumstances.</br><br/>http://www.amazon.com/gp/product/B004326F0A