A meal that comprises of all the three food groups is referred to as a Balanced Diet.
A balanced diet should have body building foods, energy giving foods and protective foods.
These foods should be in sufficient amounts.
An example of a meal that can be called a balanced diet is: a plate of meat (beef), ugali and kales (sukuma wiki).
Meat is a body building food, ugali is energy giving while sukuma wiki is a protective food.
This plate should have sufficient quantity of all these foods.
A balanced diet helps the body to grow and to stay strong and healthy.
One should also drink enough clean water.