I have been involved in the sport of competitive bicycle racing for 30 years. As a professional coach, I am continually monitoring the science for new advances in exercise physiology, nutrition, and training techniques. My coaching approach blends the "tried-and-true" techniques with emerging methods and technologies to help my athletes reach their potential and achieve their goals. To that end, I try to make use of any legal tool or technique that is useful. Accordingly, I rely on power and heart rate when available, but also pay special attention to each individual athlete's subjective perception of effort, fatigue and performance.