ScienceGlobal issuesHow do muscles actually work?To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoScienceGlobal issuesJörg Gero Grüner09/18/2023September 18, 2023Nothing in the body moves without muscles! They make the heart pump blood, the lungs breathe and the digestive system process food. And the muscle fibers owe their power to millions of tiny protein motors.https://p.dw.com/p/4WHQvAdvertisement