Twelve minutes is all it takes to maximize muscle size and strength, shed fat, and dramatically reduce your risk of heart attack, cancer, and diabetesBody by Science challenges everything you thought you knew about exercise and takes you deep inside your body's inner workings--all the way down to the single cell--to explain what science now knows about the role of exercise in human health.With the help of medical diagrams and step-by-step photos, exercise scientist Doug McGuff, M.D., and weight-training pioneer John Little present a revolutionary new workout protocol that fully leverages the positive effects of high-intensity, low-frequency weight training, while avoiding the negative effects of traditional aerobic-centric exercise.In as little as 12 minutes a week, you'll:Build muscle size and strength, fastOptimize cardiovascular healthRamp up your metabolismLower cholesterolIncrease insulin sensitivityImprove flexibilityManage arthritis and chronic back painBuild bone densityReduce your risk for diabetes, cancer, heart attack, and more