Why are Dutch people so tall?

Average height of Dutch men is 1m86. Why are Dutch men tallest? My husband is 1m95. I made a short video to explain many reasons, they can help your children to become as tall as Dutch people are!
In the Netherlands: babies drink Vitamin D at least until 4 years old (Vitamin K only during first month); eat dairy products daily: cheese, milk, vla…; kids learn swimming as soon as possible and ride the bicycle, walk much, go to bed around 7PM and no light during sleeping time; pregnant women drink Vitamin and be active; kids eat fruit, vegetables, drink water, playground is everywhere; eat eggs and seafood, especially Haring with bone.