Low-tech circuits, or repetitive exercises on specific muscle groups are an increasing popular way of exercising. This guide gives a structured fitness programme, designed to keep exercising time down to a minimum, with hints and tips on diet, and avoiding and coping with sports injury. The book starts with an eight-week beginner course leading to a basic level of fitness which can then be maintained indefinitely using the maintenance and specialization circuits. This section also shows how to concentrate on individual requirements and diversify into games and sports. There are self-assessment tests throughout and the final section gives a four-week course designed to bring you to a peak of physical and mental fitness for a tough challenge based on SBS/SAS selection procedures which very few will find possible.