MX is tough photo: Steve Bruhn

Whether you have been into MX your entire life, or just getting into it, you know one thing for sure: racing dirt bikes is tough. MX racers are often referred to as the best conditioned athletes in the world, but where is the proof? Dr. Augustine and his colleagues at the Jacksonville Orthopedic Institute in Jacksonville, FL have completed a study measuring the heart rates of professional riders during MX and SX races that supports the claim that MXers are the best conditioned athletes in the world. To read the complete article, go to www.racerxvt.com.