It’s neither a bicycle nor a tricycle. It’s a twicycle, which is a “bike that doubles cyclists’ workout by incorporating arm cranks in addition to regular ones.” The word crank really makes this activity sound exhausting, but that’s actually the point. “Twicycle is aimed at people who enjoy cycling, the outdoors and would like to workout their full body equally well including their arms, chest, and back.” Here’s an awesome video of a guy at Eurobike 2018 testing out the concept while smoking a cigarette. As he says, “Why not?”
