there have been many scientific studies of their lifestyle and you can even buy cookery books based on their diets.Some of the reasons for their good health are that they
go fishing and eat what they catch
regularly do gardening and grow their own fruit and vegetable
go cycling and never drive when they can walk
often spend time with friend. They meet at people's houses and play game
rarely buy food from a supermarket
do regular exercise , go swimming and lead active lives