Jeffrey Siegel: What makes muscles grow?

What makes muscles grow?

We have over 600 muscles in our bodies that help bind us together, hold us up, and help us move. Your muscles also need your constant attention, because the way you treat them on a daily basis determines whether they will wither or grow. Jeffrey Siegel illustrates how a good mix of sleep, nutrition and exercise keep your muscles as big and strong as possible. [Directed by Brett Underhill, narrated by Addison Anderson].

Muscles make up between one-third and one-half of body weight, binding us together and powering every movement. They grow or wither based on daily choices—especially stress, nutrition, and rest. Meaningful muscle growth begins at the cellular level when exertion causes microscopic damage, triggering repair and adaptation. Only by regularly challenging muscles with increased workload and supporting recovery can the body build lasting strength.