Full-colour, detailed anatomical drawings show each exercise while it's being performed and exactly what muscles are being used (it's like having an x-ray of each exercise!). Exercises for women to use for shaping and toning the buttocks, abs, legs and back are included and a colour-coded key shows the reader exactly what muscles are isolated for each exercise. Exercise variations also feature with explanations of how they affect muscles, so readers can target certain muscles and customise their strength training regimes. The anatomical differences between men and women (relative to strength training) are also illuminated and the way that muscles interact with joints and skeletal function is described.