Stranger learn on Instagram: "This video is a great reminder of where the term “horsepower” actually comes from—a measurement rooted in the real, physical strength of horses, long before it became a casual way to describe car engines. In the 18th century, engineer James Watt defined one horsepower as the energy required for a horse to pull roughly 180 kg at a steady pace, equal to about 746 watts of power. The horses shown here aren’t typical riding horses, though—they’re draft horses, selective