They just figured this out?

They just figured this out? I'm blown away.

Cycling represents one of the most energy-efficient forms of transport ever invented.

Your bicycle isn’t just a transport device, but a perfectly evolved machine that works in partnership with your physiology, turning your raw muscle power into efficient motion.

#CYCling

https://www.the-independent.com/life-style/health-and-families/cycling-walking-running-exercise-benefits-bike-b2915951.html?test_group=lighteradlayout