Leonie is a former competitive CrossFit athlete; she became the national champion of the Netherlands three years in a row and competed at the CrossFit Games (world championships) in 2019. She was also the first Dutch individual CrossFit athlete at the CrossFit Games. After her CrossFit career, she started working as a Business Consultant in the Change management field, as well as starting her own company to coach athletes on their mental game. Leonie helps athletes to reach their full potential mentally, so they can showcase the best they can be.