The Swing!

Tracy Reifkind lost 120 pounds through kettlebell training, and her account of that change is the basis for this program. Her approach was featured in Timothy Ferriss's The 4-Hour Body, and she now shares the method in full. The Swing! combines exercise, nutrition and lifestyle guidance aimed at losing weight quickly while keeping it off.

The workouts take only two half-hour sessions a week, or about four hours a month. Reifkind also covers how to build a determined mindset and follows a diet built around protein. She describes her own results as proof that the plan works without costly equipment or a gym membership.

The book is meant for readers who want a practical, low-cost route to a fitter body and a more confident outlook on their health.