I work long hours and struggle to get to the gym in the week. Since the start of October, I have used the circuits in Cardio Strength Training as the basis for the 15-20 minute workouts I do in my garage at home each morning. This has helped me reach my best level of fitness ever - knocking over a minute off my best 5k run time without going doing road work. The workouts are short, intense and varied, developing metabolic conditioning without sacrificing strength and conditioning. They include complexes, volume-based training circuits and interval training. You can use lots of different tools, including barbells, dumbbells, kettlebells, medicine balls or just your bodyweight. The workouts are fun but tough. I have worked hard but seen great results.
My one gripe with the book is that it was badly proof-read. But that has not distracted from its usefulness.
Great for busy people who want great results in little time and are prepared to work hard to achieve this.