Thirza is the founder of Functional Horse Training, an internationally oriented company with the mission to optimize or restore the movement functionality of the (modern) horse.

 

This mission is shaped by means of an international education center where Thirza translates knowledge of the horse 'inside-out' into practical training considerations for optimal functionality of the horse's body to allow the horse to move with optimal efficiency, but minimal effort. 

Functional Horse Training is represented in: Australia, Europe, New Zealand, South Africa, Taiwan and the United States.