The Download: our bodies' memories, and Traton's electric trucks

Plus: China's on a mission to crack down on Nvidia's China-specific chips How do our bodies remember? "Like riding a bike" is shorthand for the remarkable way that our bodies remember how to move. Most of the time when we talk about muscle memory, we're not talking about the muscles themselves but about the memory of a coordinated movement pattern that lives in the motor neurons, which control our muscles. Yet in recent years, scientists have discovered that have a memory for movement and exercise. And the more we move, as with riding a bike or other kinds of exercise, the more those cells begin to make a memory of that exercise. This piece is part of MIT Technology Review Explains: our series untangling the complex, messy world of technology to help you understand what's coming next.