Just as a physically healthy person might not actually be fit enough to run a 5k, so churches can appear healthy—with no obvious issues, maintaining a healthy size—and yet not exhibit fitness. A fit church is one that is not satisfied with merely coasting along with no problems. A fit church is actively making disciples, maturing in faith, developing strong leaders, reaching out to the community, and more.
Building the Body offers pastors and church leaders twelve characteristics of fit churches and shows them how they can move their church through five levels of fitness, from beginner all the way to elite. It also includes comparison charts at the end of each chapter so readers can clearly see where their church currently falls and a "Complete the Progress Chart" at the end of the book so that they can see what their goals should be for the future.