Over the past 10 years while teaching over 5,000 hours of indoor cycling classes throughout various fitness facilities across the U.S. I have found that in order to get the best workout on a bike you must have the right technique whether you are cycling indoors and or outdoors. Cross-training on the indoor bike has had added many positive effects to my training for two international Ironman’s in Nice, France and Florianopolis, Brazil over the past couple of years. I owe it to cycling for getting my body into the best shape of my life and improving muscle endurance throughout my legs and core. My father, John Nunn also used cycling as a perfect way to crosstrain for the Olympics in 1968 while winning a bronze medal in rowing. John also discusses the importance that indoor cycling bikes that offer the perfect cross training exercises with all the training benefits of road cycling and without the risks of crash injuries. The indoor cycling ‘boom’ hit in the late 1980’s and early 90’s with the emergeance of the ‘spin class.’ Since then almost every single fitness machine manufacturer has developed am indoor bicycle. Indoor and outdoor cycling have become so popular because nearly everyone knows how to ride a bike and the leg drive on a bicycle is a relatively simple process. You may either pedal with greater force, more pedal velocity along with resistance in gears or brake, or both to achieve greater speed and power. In order to accomplish this you must first transfer your body’s energy to the pedals. How much of this energy you transfer is determined by your efficiency and technique during the pedal stroke. There are many ways to increase power and efficiency. It is possible to be a fit and powerful athlete, but not necessarily a fast one if you are inefficient.