How do my muscles move my body?
The Pulling Crew
How do my muscles move my body?
Right now, without you even thinking about it, an entire pulling crew is hard at work inside you. Lift a finger, blink, smile — every move is a tug-of-war you always win. So who's doing the pulling?
Meet your muscles. Each one is a thick bundle of stretchy strands, packed tight like a fistful of cooked spaghetti. And here's the secret to everything they do: a muscle has exactly one trick. It can squeeze itself shorter. That's it. Pull, pull, pull — that's the whole job.
