Endurance athletes understand the need for oxygen, but how does your respiratory system and the exchange of gases within your body actually work? Respiratory Therapist and TriDot Coach Ryan Tibball provides an overview of your respiratory system and how you can improve your respiratory fitness. Ryan defines VO2 max and its relationship to training. He also recommends optimal breathing patterns for swimming, biking, and running that can significantly benefit your triathlon performance and offers special considerations for asthmatic athletes.