This book presents practical information on aerobic and muscular fitness, fitness and weight control, and causes of obesity, as well as weight-control fallacies, fads and quack devices. It provides an explanation of how fitness is achieved, and offers information about important fitness research, including the relationship between exercise and cardiovascular health, dieting and the yo-yo effect, strength training, aerobic tests, low back fitness, eating disorders, and fat intake. The book also contains many appendices with detailed explanations of muscles, energy and oxygen; aerobic and muscular fitness tests, programmes and logs; information on calorie intake/expenditure and body composition; health risk analysis and longevity estimates; fitness trail information and principles of training.