This Danish fit-tech company was founded in 2015 by an eclectic team of athletes, engineers, and astrophysicists. They realized that the motion sensors found inside smartphones could be used to generate live fitness metrics, like cadence and power, on any bike. So, they built an app and added some fun interactive features and games. It worked. For years, Motosumo was a mainstay in gyms and fitness studios around the world, helping them upgrade their basic equipment and revitalize their indoor cycling and group fitness classes.