> I vaguely recall back in one of my engineering classes we did the math on turning all of the stationary bikes at the gym into power generating units. Very mu

> I vaguely recall back in one of my engineering classes we did the math on turning all of the stationary bikes at the gym into power generating units. Very much related: https://www.youtube.com/watch?v=S4O5voOCqAQ https://www.youtube.com/watch?v=S4O5voOCqAQ