Dr. James A. Levine is a professor at the Mayo Clinic in Scottsdale, Arizona, and teaches physiology and bioengineering. He is an international expert on obesity and the author of 120 articles published in all major science journals, such as Science, Nature, New England Journal of Medicine and Lancet. Today he lectures around the world and is a science advisor to the U.S. government, United Nations, China, Jamaica and some African countries. He has received over 50 national and international awards in science and is the author of the bestseller Get Up!: Why Your Chair is Killing You and What you Can Do About It