Rising runway star Roosmarijn de Kok and Nike master trainer Joe Holder break down some of the most effective exercises in the gym. Filmed at Performix House: https://performixhouse.com/ For more on Roos' routine, check out the full story on Harper's Bazaar: https://bit.ly/2TNZeag Subscribe to Harper's Bazaar: http://bit.ly/SUBSCRIBEtoBAZAAR / harpersbazaar / harpersbazaarus / harpersbazaarus https://www.pinterest.com/harpersbaza...