Les Mills CXWORX Classes at Club Greenwood provide a great workout which focuses on your core muscles. CXWORX is perfect for participants of all ages and fitness levels. CXWORX utilizes resistance bands and weight plates along with body weight exercises like crunches. Club Greenwood is happy to offer the Lone Tree, Centennial, Denver, Castle Rock, Cherry Hills, and Greenwood Village areas with CXWORX to help men and women put more variety in their workout routines.