Visits to Gran are always special to Zac and Zara. They know she cares for them and wants the very best for their lives. Gran teaches them what is going on inside their bodies and how they can choose to stay healthy and feel well. The latest science shows that good guts are essential to long, active lives because so many health conditions are influenced by our gut heath; so learning about food will help them thrive. We are all equipped with a friend called Mikey, who protects us every day, as long as we keep him strong. Practical worksheets are provided to aid the use of this material and subject. They could form the basis of a useful school or home project.