On MuscleRemarkable . . . A singular book about the true meanings of strength and flexibility, about our ability to define who we are and who we might be' Ed Yong, New York Times bestselling author of An Immense World and I Contain Multitudes From the bestselling author of Why We Swim comes a mind expanding exploration of muscle that will change the way you think about how we move and why it matters. Cardiac, smooth, skeletalthese three different types of