Home > Exercise/Rehabilitation > The Importance of Cross-Training Get the Flash Player to see this player. Rate: (Click the stars to rate) Published on Sep 12, 2010 by Cleveland Clinic, Views: 3300 Dr. Richard Parker answers a question from Debbie from North Olmsted, Ohio. How important is it to change up your cardio routine? Cross-training is important to spread out stresses throughout the body. Biking, swimming and jogging are examples of cross-training.