Timothy Clarke is an FDNY Firefighter in Ladder Company 12 in the Chelsea neighborhood of Manhattan and an International Association of Firefighters Peer Certified Fitness instructor. He spent three years racing professionally in the sport of triathlon and is a QT2 systems level 3 certified triathlon coach. As both an athlete and a coach, Tim has spent the last 10 years using biometric heart rate data as a tool for training and racing. His experience has given him a unique insight into what happens inside the human body during high-risk fires, emergencies and events as well as during workouts and recovery.  Tim is a graduate of the University of Delaware and serves as a Human Performance Data Analyst for Leadership Under Fire.