Working out on an air bike can feel especially difficult because with an air bike you are utilizing your entire body, unlike other pieces of equipment that focus only on the lower body. In addition to building and pushing against resistance with your lower body, you are also working your chest, arms, shoulders, and obliques to increase speed and power with the bike’s handles. Another factor that makes an air bike workout so hard is the way that you create resistance. The harder you pedal, the harder it becomes to pedal. This makes it difficult to quickly increase your speed because you need to significantly increase your force while working against intense resistance.