Aimed at children of 5 to 7 years of age, 'Am I Fit and Healthy?' explains what foods make up a healthy diet, how exercise can help keep the body fit and how energy from food is what makes exercise possible.Aimed at children of 5 to 7 years of age, 'Am I Fit and Healthy?' explains what foods make up a healthy diet, how exercise can help keep the body fit and how energy from food is what makes exercise possible.