Dr. James Levine, an esteemed expert on obesity, argues that the reason so many of us are overweight is simple: our office and social-networking environments coax us to remain desk sentenced. Human beings were not built for sitting, and sedentary living is bad for us. The solution is to think NEAT - nonexercise activity thermogenesis, the scientific name for everyday movement. You don't need to schedule additional workout hours. Dr. Levine's eight-week prescription for effortless weight loss fits anyone's busy schedule. Book jacket.