Dr. Allen Lim is an exercise scientist, coach, lifelong cyclist and founder of Skratch Labs.

From his academic work on power meters beginning in 1997 until today, Dr. Allen Lim has been obsessed with improving a cyclist’s performance, on and off the bike. The founder of Skratch Labs has coached some of the world’s best cyclists, including most all the American grand tour contenders of the past 15 years. In Beyond Limits, Dr. Lim brings you inside the sport at the highest levels, showing its secrets, its humanity and its significance for everyday riders as we seek to improve.