Just as a physically healthy person - at an ideal weight and with good blood pressure and cholesterol numbers - 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 12 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 - just as an athlete, through training and practice, can become the top in his or her class.