IN NOVEMBER 2017, I founded Hydrow, an indoor rowing machine startup. Prior to that, I'd spent years rowing and coaching—and witnessing the transformative power of the sport. Rowing is a singularly efficient exercise, engaging 86 percent of the body's muscles. On a deeper level, it requires unique teamwork; a crew on the water builds a special bond. We created Hydrow to share that feeling with everyone.
Earlier rowing machines had eliminated everything from